Canning began in France, at the turn of the nineteenth century, when Napoleon Bonaparte was desperate for a way to keep his troops well fed while on the march. In 1800 he decided to hold a contest, offering 12, 000 francs to anyone who could devise a suitable method of food preservation. Nicolas François Appert, a French confectioner, rose to the challenge, considering that if wine could be preserved in bottles, perhaps food could be as well. He experimented until he was able to prove that heating food to boiling after it had been sealed in airtight glass bottles prevented the food from deteriorating. Interestingly, this all took place about 100 years before Louis Pasteur found that heat could destroy bacteria. Nearly ten years after the contest began, Napoleon personally presented Nicolas with the cash reward.
Canning practices have evolved over the last two centuries, but the principles remain the same. In fact, the way we can foods today is basically the same way our grandparents and great grandparents preserved their harvests for the winter months.
On the next few pages you will find descriptions of proper canning methods, with details on how canning works and why it is both safe and economical. Much of the information here is from the USDA, which has done extensive research on home canning and preserving. If you are new to home canning, read this section carefully as it will help to ensure success with the recipes that follow.
Whether you are a seasoned home canner or this is your first foray into food preservation, it is important to follow directions carefully. With some recipes it is okay to experiment with varied proportions or added ingredients, and with others it is important to stick to what’s written. In many instances it is noted whether or not creative liberty is a good idea for a particular recipe, but if you are not sure, play it safe—otherwise you may end up with a jam that is too runny, a vegetable that is mushy, or a product that is spoiled. Take time to read the directions and prepare your foods and equipment adequately and you will find that home canning is safe, economical, tremendously satisfying, and a great deal of fun!
The Benefits of Canning
Canning is fun, economical, and a good way to preserve your precious produce. As more and more farmers’ markets make their way into urban centers, city dwellers are also discovering how rewarding it is to make seasonal treats last all year round. Besides the value of your labor, canning home-grown or locally grown food may save you half the cost of buying commercially canned food. Freezing food may be simpler, but most people have limited freezer space, whereas cans of food can be stored almost anywhere. And what makes a nicer, more thoughtful gift than a jar of homemade jam, tailored to match the recipient’s favorite fruits and flavors?
The nutritional value of home canning is an added benefit. Many vegetables begin to lose their vitamins as soon as they are harvested. Nearly half the vitamins may be lost within a few days unless the fresh produce is kept cool or preserved. Within one to two weeks, even refrigerated produce loses half or more of certain vitamins. The heating process during canning destroys from one-third to one-half of vitamins A and C, thiamin, and riboflavin. Once canned, foods may lose from 5 to 20 percent of these sensitive vitamins each year. The amounts of other vitamins, however, are only slightly lower in canned compared with fresh food. If vegetables are handled properly and canned promptly after harvest, they can be more nutritious than fresh produce sold in local stores.
The advantages of home canning are lost when you start with poor quality foods, when jars fail to seal properly, when food spoils, and when flavors, texture, color, and nutrients deteriorate during prolonged storage. The tips that follow explain many of these problems and recommend ways to minimize them.
How Canning Preserves Foods
The high percentage of water in most fresh foods makes them very perishable. They spoil or lose their quality for several reasons:
Microorganisms live and multiply quickly on the surfaces of fresh food and on the inside of bruised, insect-damaged, and diseased food. Oxygen and enzymes are present throughout fresh food tissues.
Proper canning practices include:
Collectively, these practices remove oxygen; destroy enzymes; prevent the growth of undesirable bacteria, yeasts, and molds; and help form a high vacuum in jars. High vacuums form tight seals, which keep liquid in and air and microorganisms out.
A large stockpot with a lid can be used in place of a boiling-water canner for high-acid foods like tomatoes, pickles, apples, peaches, and jams. Simply place a rack inside the pot so that the jars do not rest directly on the bottom of the pot.
Acid foods—Foods that contain enough acid to result in a pH of 4.6 or lower. Includes most tomatoes; fermented and pickled vegetables; relishes; jams, jellies, and marmalades; and all fruits except figs. Acid foods may be processed in boiling water.
Ascorbic acid—The chemical name for vitamin C; commonly used to prevent browning of peeled, light-colored fruits and vegetables.
Blancher—A 6- to 8-quart lidded pot designed with a fitted, perforated basket to hold food in boiling water or with a fitted rack to steam foods. Useful for loosening skins on fruits to be peeled or for heating foods to be hot packed.
Boiling-water canner—A large, standard-sized, lidded kettle with jar rack designed for heat-processing seven quarts or eight to nine pints in boiling water.
Botulism—An illness caused by eating a toxin produced by growth of Clostridium botulinum bacteria in moist, low-acid food containing less than 2 percent oxygen and stored between 40 and 120°F. Proper heat processing destroys this bacterium in canned food. Freezer temperatures inhibit its growth in frozen food. Low moisture controls its growth in dried food. High oxygen controls its growth in fresh foods.
Canning—A method of preserving food that employs heat processing in airtight, vacuum-sealed containers so that food can be safely stored at normal home temperatures.
Canning salt—Also called pickling salt. It is regular table salt without the anti-caking or iodine additives.
Citric acid—A form of acid that can be added to canned foods. It increases the acidity of low-acid foods and may improve their flavor.
Cold pack—Canning procedure in which jars are filled with raw food. “Raw pack” is the preferred term for describing this practice. “Cold pack” is often used incorrectly to refer to foods that are open-kettle canned or jars that are heat-processed in boiling water.
Enzymes—Proteins in food that accelerate many flavor, color, texture, and nutritional changes, especially when food is cut, sliced, crushed, bruised, or exposed to air. Proper blanching or hot-packing practices destroy enzymes and improve food quality.
Exhausting—Removing air from within and around food and from jars and canners. Exhausting or venting of pressure canners is necessary to prevent botulism in low-acid canned foods.
Headspace—The unfilled space above food or liquid in jars that allows for food expansion as jars are heated and for forming vacuums as jars cool.
Heat processing—Treatment of jars with sufficient heat to enable storing food at normal home temperatures.
Hermetic seal—An absolutely airtight container seal that prevents reentry of air or microorganisms into packaged foods.
Hot pack—Heating of raw food in boiling water or steam and filling it hot into jars.
Low-acid foods—Foods that contain very little acid and have a pH above 4.6. The acidity in these foods is insufficient to prevent the growth of botulism bacteria. Vegetables, some varieties of tomatoes, figs, all meats, fish, seafood, and some dairy products are low-acid foods. To control all risks of botulism, jars of these foods must be either heat processed in a pressure canner or acidified to a pH of 4.6 or lower before being processed in boiling water.
Microorganisms—Independent organisms of microscopic size, including bacteria, yeast, and mold. In a suitable environment, they grow rapidly and may divide or reproduce every ten to thirty minutes. Therefore, they reach high populations very quickly. Microorganisms are sometimes intentionally added to ferment foods, make antibiotics, and for other reasons. Undesirable microorganisms cause disease and food spoilage.
Mold—A fungus-type microorganism whose growth on food is usually visible and colorful. Molds may grow on many foods, including acid foods like jams and jellies and canned fruits. Recommended heat processing and sealing practices prevent their growth on these foods.
Mycotoxins—Toxins produced by the growth of some molds on foods.
Open-kettle canning—A non-recommended canning method. Food is heat-processed in a covered kettle, filled while hot into sterile jars, and then sealed. Foods canned this way have low vacuums or too much air, which permits rapid loss of quality in foods. Also, these foods often spoil because they become recontaminated while the jars are being filled.
Pasteurization—Heating food to temperatures high enough to destroy disease-causing microorganisms. pH—A measure of acidity or alkalinity. Values range from 0 to 14. A food is neutral when its pH is 7.0. Lower values are increasingly more acidic; higher values are increasingly more alkaline.
PSIG—Pounds per square inch of pressure as measured by a gauge.
Pressure canner—A specifically designed metal kettle with a lockable lid used for heat processing low-acid food. These canners have jar racks, one or more safety devices, systems for exhausting air, and a way to measure or control pressure. Canners with 20- to 21-quart capacity are common. The minimum size of canner that should be used has a 16-quart capacity and can hold seven one-quart jars. Use of pressure saucepans with a capacity of less than 16 quarts is not recommended.
Raw pack—The practice of filling jars with raw, unheated food. Acceptable for canning low-acid foods, but allows more rapid quality losses in acid foods that are heat-processed in boiling water. Also called “cold pack.”
Style of pack—Form of canned food, such as whole, sliced, piece, juice, or sauce. The term may also be used to specify whether food is filled raw or hot into jars.
Vacuum—A state of negative pressure that reflects how thoroughly air is removed from within a jar of processed food; the higher the vacuum, the less air left in the jar.
Growth of the bacterium Clostridium botulinum in canned food may cause botulism—a deadly form of food poisoning. These bacteria exist either as spores or as vegetative cells. The spores, which are comparable to plant seeds, can survive harmlessly in soil and water for many years. When ideal conditions exist for growth, the spores produce vegetative cells, which multiply rapidly and may produce a deadly toxin within three to four days in an environment consisting of:
Botulinum spores are on most fresh food surfaces. Because they grow only in the absence of air, they are harmless on fresh foods. Most bacteria, yeasts, and molds are difficult to remove from food surfaces. Washing fresh food reduces their numbers only slightly. Peeling root crops, underground stem crops, and tomatoes reduces their numbers greatly. Blanching also helps, but the vital controls are the method of canning and use of the recommended research-based processing times. These processing times ensure destruction of the largest expected number of heatresistant microorganisms in home-canned foods.
Properly sterilized canned food will be free of spoilage if lids seal and jars are stored below 95°F. Storing jars at 50 to 70°F enhances retention of quality.
Whether food should be processed in a pressure canner or boiling-water canner to control botulism bacteria depends on the acidity in the food. Acidity may be natural, as in most fruits, or added, as in pickled food. Low-acid canned foods contain too little acidity to prevent the growth of these bacteria. Other foods may contain enough acidity to block their growth or to destroy them rapidly when heated. The term “pH” is a measure of acidity: the lower its value, the more acidic the food. The acidity level in foods can be increased by adding lemon juice, citric acid, or vinegar.
Low-acid foods have pH values higher than 4.6. They include red meats, seafood, poultry, milk, and all fresh vegetables except for most tomatoes. Most products that are mixtures of low-acid and acid foods also have pH values above 4.6 unless their ingredients include enough lemon juice, citric acid, or vinegar to make them acid foods. Acid foods have a pH of 4.6 or lower. They include fruits, pickles, sauerkraut, jams, jellies, marmalade, and fruit butters.
Although tomatoes usually are considered an acid food, some are now known to have pH values slightly above 4.6. Figs also have pH values slightly above 4.6. Therefore, if they are to be canned as acid foods, these products must be acidified to a pH of 4.6 or lower with lemon juice or citric acid. Properly acidified tomatoes and figs are acid foods and can be safely processed in a boiling-water canner.
Botulinum spores are very hard to destroy at boiling-water temperatures; the higher the canner temperature, the more easily they are destroyed. Therefore, all low-acid foods should be sterilized at temperatures of 240 to 250°F, attainable with pressure canners operated at 10 to 15 PSIG. (PSIG means pounds per square inch of pressure as measured by a gauge.) At these temperatures, the time needed to destroy bacteria in low-acid canned foods ranges from twenty to 100 minutes. The exact time depends on the kind of food being canned, the way it is packed into jars, and the size of jars. The time needed to safely process low-acid foods in boiling water ranges from seven to eleven hours; the time needed to process acid foods in boiling water varies from five to eighty-five minutes.
It is important to know your approximate elevation or altitude above sea level in order to determine a safe processing time for canned foods. Since the boiling temperature of liquid is lower at higher elevations, it is critical that additional time be given for the safe processing of foods at altitudes above sea level.
Open-kettle canning and the processing of freshly filled jars in conventional ovens, microwave ovens, and dishwashers are not recommended because these practices do not prevent all risks of spoilage. Steam canners are not recommended because processing times for use with current models have not been adequately researched. Because steam canners may not heat foods in the same manner as boiling-water canners, their use with boiling-water processing times may result in spoilage. So-called canning powders are useless as preservatives and do not replace the need for proper heat processing.
It is not recommended that pressures in excess of 15 PSIG be applied when using new pressure-canning equipment.
Examine food carefully for freshness and wholesomeness. Discard diseased and moldy food. Trim small diseased lesions or spots from food.
Can fruits and vegetables picked from your garden or purchased from nearby producers when the products are at their peak of quality—within six to twelve hours after harvest for most vegetables. However, apricots, nectarines, peaches, pears, and plums should be ripened one or more days between harvest and canning. If you must delay the canning of other fresh produce, keep it in a shady, cool place.
Fresh, home-slaughtered red meats and poultry should be chilled and canned without delay. Do not can meat from sickly or diseased animals. Put fish and seafood on ice after harvest, eviscerate immediately, and can them within two days.
To maintain good natural color and flavor in stored canned food, you must:
Follow these guidelines to ensure that your canned foods retain optimal colors and flavors during processing and storage:
You can get ascorbic acid in several forms:
Pure powdered form—Seasonally available among canning supplies in supermarkets. One level teaspoon of pure powder weighs about 3 grams. Use 1 teaspoon per gallon of water as a treatment solution.
Vitamin C tablets—Economical and available year-round in many stores. Buy 500-milligram tablets; crush and dissolve six tablets per gallon of water as a treatment solution.
Commercially prepared mixes of ascorbic and citric acid—Seasonally available among canning supplies in supermarkets. Sometimes citric acid powder is sold in supermarkets, but it is less effective in controlling discoloration. If you choose to use these products, follow the manufacturer’s directions.
Many fresh foods contain from 10 percent to more than 30 percent air. The length of time that food will last at premium quality depends on how much air is removed from the food before jars are sealed. The more air that is removed, the higher the quality of the canned product.
Raw packing is the practice of filling jars tightly with freshly prepared but unheated food. Such foods, especially fruit, will float in the jars. The entrapped air in and around the food may cause discoloration within two to three months of storage. Raw-packing is more suitable for vegetables processed in a pressure canner.
Hot packing is the practice of heating freshly prepared food to boiling, simmering it three to five minutes, and promptly filling jars loosely with the boiled food. Hot packing is the best way to remove air and is the preferred pack style for foods processed in a boiling-water canner. At first, the color of hot-packed foods may appear no better than that of raw-packed foods, but within a short storage period both color and flavor of hot-packed foods will be superior.
Whether food has been hot packed or raw packed, the juice, syrup, or water to be added to the foods should be heated to boiling before it is added to the jars. This practice helps to remove air from food tissues, shrinks food, helps keep the food from floating in the jars, increases vacuum in sealed jars, and improves shelf life. Preshrinking food allows you to add more food to each jar.
The unfilled space above the food in a jar and below its lid is termed headspace. It is best to leave a ¼-inch headspace for jams and jellies, ½-inch for fruits and tomatoes to be processed in boiling water, and from 1 to 1¼ inches in low-acid foods to be processed in a pressure canner.
This space is needed for expansion of food as jars are processed and for forming vacuums in cooled jars. The extent of expansion is determined by the air content in the food and by the processing temperature. Air expands greatly when heated to high temperatures—the higher the temperature, the greater the expansion. Foods expand less than air when heated.
Food may be canned in glass jars or metal containers. Metal containers can be used only once. They require special sealing equipment and are much more costly than jars.
Mason-type jars designed for home canning are ideal for preserving food by pressure or boiling-water canning. Regular and wide-mouthed threaded mason jars with self-sealing lids are the best choices. They are available in half-pint, pint, 1½-pint, and quart sizes. The standard jar mouth opening is about 2⅜ inches. Wide-mouthed jars have openings of about 3 inches, making them more easily filled and emptied. Regular-mouth decorative jelly jars are available in eight-ounce and 12-ounce sizes.
With careful use and handling, mason jars may be reused many times, requiring only new lids each time. When lids are used properly, jar seals and vacuums are excellent.
Jar Cleaning
Before reuse, wash empty jars in hot water with detergent and rinse well by hand, or wash in a dishwasher. Rinse thoroughly, as detergent residue may cause unnatural flavors and colors. Scale or hard-water films on jars are easily removed by soaking jars several hours in a solution containing 1 cup of vinegar (5 percent acid) per gallon of water.
Sterilization of Empty Jars
Use sterile jars for all jams, jellies, and pickled products processed less than ten minutes. To sterilize empty jars, put them right side up on the rack in a boiling-water canner. Fill the canner and jars with hot (not boiling) water to 1 inch above the tops of the jars. Boil ten minutes. Remove and drain hot sterilized jars one at a time. Save the hot water for processing filled jars. Fill jars with food, add lids, and tighten screw bands.
Empty jars used for vegetables, meats, and fruits to be processed in a pressure canner need not be sterilized beforehand. It is also unnecessary to sterilize jars for fruits, tomatoes, and pickled or fermented foods that will be processed ten minutes or longer in a boiling-water canner.
Lid Selection, Preparation, and Use
The common self-sealing lid consists of a flat metal lid held in place by a metal screw band during processing. The flat lid is crimped around its bottom edge to form a trough, which is filled with a colored gasket material. When jars are processed, the lid gasket softens and flows slightly to cover the jar-sealing surface, yet allows air to escape from the jar. The gasket then forms an airtight seal as the jar cools. Gaskets in unused lids work well for at least five years from date of manufacture. The gasket material in older unused lids may fail to seal on jars.
It is best to buy only the quantity of lids you will use in a year. To ensure a good seal, carefully follow the manufacturer’s directions in preparing lids for use. Examine all metal lids carefully. Do not use old, dented, or deformed lids or lids with gaps or other defects in the sealing gasket.
After filling jars with food, release air bubbles by inserting a flat plastic (not metal) spatula between the food and the jar. Slowly turn the jar and move the spatula up and down to allow air bubbles to escape. Adjust the headspace and then clean the jar rim (sealing surface) with a dampened paper towel. Place the lid, gasket down, onto the cleaned jar-sealing surface. Uncleaned jar-sealing surfaces may cause seal failures.
Then fit the metal screw band over the flat lid. Follow the manufacturer’s guidelines enclosed with or on the box for tightening the jar lids properly.
Do not retighten lids after processing jars. As jars cool, the contents in the jar contract, pulling the self-sealing lid firmly against the jar to form a high vacuum. Screw bands are not needed on stored jars. They can be removed easily after jars are cooled. When removed, washed, dried, and stored in a dry area, screw bands may be used many times. If left on stored jars, they become difficult to remove, often rust, and may not work properly again.
When food is canned in boiling water, more processing time is needed for most raw-packed foods and for quart jars than is needed for hot-packed foods and pint jars.
To destroy microorganisms in acid foods processed in a boiling-water canner, you must:
To destroy microorganisms in low-acid foods processed with a pressure canner, you must:
The food may spoil if you fail to use the proper processing times, fail to vent steam from canners properly, process at lower pressure than specified, process for fewer minutes than specified, or cool the canner with water.
Processing times for haft-pint and pint jars are the same, as are times for 1 ½-pint and quart jars. For some products, you have a choice of processing at 5, 10, or 15 PSIG. In these cases, choose the canner pressure (PSIG) you wish to use and match it with your pack style (raw or hot) and jar size to find the correct processing time.
There are two main types of canners for heat-processing home-canned food: boiling-water canners and pressure canners. Most are designed to hold seven one-quart jars or eight to nine one-pint jars. Small pressure canners hold four one-quart jars; some large pressure canners hold eighteen 1-pint jars in two layers but hold only seven quart jars. Pressure saucepans with smaller volume capacities are not recommended for use in canning. Treat small pressure canners the same as standard larger canners; they should be vented using the typical venting procedures.
Low-acid foods must be processed in a pressure canner to be free of botulism risks. Although pressure canners also may be used for processing acid foods, boiling-water canners are recommended because they are faster. A pressure canner would require from fifty-five to 100 minutes to can a load of jars; the total time for canning most acid foods in boiling water varies from twenty-five to sixty minutes.
A boiling-water canner loaded with filled jars requires about twenty to thirty minutes of heating before its water begins to boil. A loaded pressure canner requires about twelve to fifteen minutes of heating before it begins to vent, another ten minutes to vent the canner, another five minutes to pressurize the canner, another eight to ten minutes to process the acid food, and, finally, another twenty to sixty minutes to cool the canner before removing jars.
These canners are made of aluminum or porcelain-covered steel. They have removable perforated racks and fitted lids. The canner must be deep enough so that at least 1 inch of briskly boiling water will cover the tops of jars during processing. Some boiling-water canners do not have flat bottoms. A flat bottom must be used on an electric range. Either a flat or ridged bottom can be used on a gas burner. To ensure uniform processing of all jars with an electric range, the canner should be no more than 4 inches wider in diameter than the element on which it is heated.
Using a Boiling-Water Canner
Follow these steps for successful boiling-water canning:
Pressure canners for use in the home have been extensively redesigned in recent years. Models made before the 1970s were heavy-walled kettles with clamp-on lids. They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse. Modern pressure canners are lightweight, thin-walled kettles; most have turn-on lids. They have a jar rack, gasket, dial or weighted gauge, an automatic vent or cover lock, a vent port (steam vent) that is closed with a counterweight or weighted gauge, and a safety fuse.
Pressure does not destroy microorganisms, but high temperatures applied for a certain period of time do. The success of destroying all microorganisms capable of growing in canned food is based on the temperature obtained in pure steam, free of air, at sea level. At sea level, a canner operated at a gauge pressure of 10 pounds provides an internal temperature of 240°F.
Air trapped in a canner lowers the inside temperature and results in under-processing. The highest volume of air trapped in a canner occurs in processing raw-packed foods in dial-gauge canners. These canners do not vent air during processing. To be safe, all types of pressure canners must be vented ten minutes before they are pressurized.
To vent a canner, leave the vent port uncovered on newer models or manually open petcocks on some older models. Heating the filled canner with its lid locked into place boils water and generates steam that escapes through the petcock or vent port. When steam first escapes, set a timer for ten minutes. After venting ten minutes, close the petcock or place the counterweight or weighted gauge over the vent port to pressurize the canner.
Weighted-gauge models exhaust tiny amounts of air and steam each time their gauge rocks or jiggles during processing. The sound of the weight rocking or jiggling indicates that the canner is maintaining the recommended pressure and needs no further attention until the load has been processed for the set time. Weighted-gauge canners cannot correct precisely for higher altitudes, and at altitudes above 1,000 feet must be operated at a pressure of 15.
Check dial gauges for accuracy before use each year and replace if they read high by more than 1 pound at 5, 10, or 15 pounds of pressure. Low readings cause over-processing and may indicate that the accuracy of the gauge is unpredictable. If a gauge is consistently low, you may adjust the processing pressure. For example, if the directions call for 12 pounds of pressure and your dial gauge has tested 1 pound low, you can safely process at 11 pounds of pressure. If the gauge is more than 2 pounds low, it is unpredictable, and it is best to replace it. Gauges may be checked at most USDA county extension offices, which are located in every state across the country. To find one near you, visit www.csrees.usda.gov.
Handle gaskets of canner lids carefully and clean them according to the manufacturer’s directions. Nicked or dried gaskets will allow steam leaks during pressurization of canners. Gaskets of older canners may need to be lightly coated with vegetable oil once per year, but newer models are pre-lubricated. Check your canner’s instructions.
Lid safety fuses are thin metal inserts or rubber plugs designed to relieve excessive pressure from the canner. Do not pick at or scratch fuses while cleaning lids. Use only canners that have Underwriter’s Laboratory (UL) approval to ensure their safety.
Replacement gauges and other parts for canners are often available at stores offering canner equipment or from canner manufacturers. To order parts, list canner model number and describe the parts needed.
Using a Pressure Canner
Follow these steps for successful pressure canning:
When processing time is completed, turn off the heat, remove the canner from heat if possible, and let the canner depressurize. Do not force-cool the canner. If you cool it with cold running water in a sink or open the vent port before the canner depressurizes by itself, liquid will spurt from jars, causing low liquid levels and jar seal failures. Force-cooling also may warp the canner lid of older model canners, causing steam leaks.
Depressurization of older models should be timed. Standard size heavy-walled canners require about thirty minutes when loaded with pints and forty-five minutes with quarts. Newer thin-walled canners cool more rapidly and are equipped with vent locks. These canners are depressurized when their vent lock piston drops to a normal position.
Cool the jars at room temperature for twelve to twenty-four hours. Jars may be cooled on racks or towels to minimize heat damage to counters. The food level and liquid volume of raw-packed jars will be noticeably lower after cooling because air is exhausted during processing and food shrinks. If a jar loses excessive liquid during processing, do not open it to add more liquid. As long as the seal is good, the product is still usable.
After cooling jars for twelve to twenty-four hours, remove the screw bands and test seals with one of the following methods:
Method 1: Press the middle of the lid with a finger or thumb. If the lid springs up when you release your finger, the lid is unsealed and reprocessing will be necessary.
Testing jar seals.
Method 2: Tap the lid with the bottom of a teaspoon. If it makes a dull sound, the lid is not sealed. If food is in contact with the underside of the lid, it will also cause a dull sound. If the jar lid is sealed correctly, it will make a ringing, high-pitched sound.
Method 3: Hold the jar at eye level and look across the lid. The lid should be concave (curved down slightly in the center). If center of the lid is either flat or bulging, it may not be sealed.
If a jar fails to seal, remove the lid and check the jar-sealing surface for tiny nicks. If necessary, change the jar, add a new, properly prepared lid, and reprocess within twenty-four hours using the same processing time.
Another option is to adjust headspace in unsealed jars to 1½ inches and freeze jars and contents instead of reprocessing. However, make sure jars have straight sides. Freezing may crack jars with “shoulders.”
Foods in single unsealed jars could be stored in the refrigerator and consumed within several days.
If lids are tightly vacuum-sealed on cooled jars, remove screw bands, wash the lid and jar to remove food residue, then rinse and dry jars. Label and date the jars and store them in a clean, cool, dark, dry place. Do not store jars at temperatures above 95°F or near hot pipes, a range, a furnace, in an un-insulated attic, or in direct sunlight. Under these conditions, food will lose quality in a few weeks or months and may spoil. Dampness may corrode metal lids, break seals, and allow recontamination and spoilage.
Accidental freezing of canned foods will not cause spoilage unless jars become unsealed and re-contaminated. However, freezing and thawing may soften food. If jars must be stored where they may freeze, wrap them in newspapers, place them in heavy cartons, and cover them with more newspapers and blankets.
Growth of spoilage bacteria and yeast produces gas, which pressurizes the food, swells lids, and breaks jar seals. As each stored jar is selected for use, examine its lid for tightness and vacuum. Lids with concave centers have good seals.
Next, while holding the jar upright at eye level, rotate the jar and examine its outside surface for streaks of dried food originating at the top of the jar. Look at the contents for rising air bubbles and unnatural color.
While opening the jar, smell for unnatural odors and look for spurting liquid and cotton-like mold growth (white, blue, black, or green) on the top food surface and underside of lid. Do not taste food from a stored jar you discover to have an unsealed lid or that otherwise shows signs of spoilage.
All suspect containers of spoiled low-acid foods should be treated as having produced botulinum toxin and should be handled carefully as follows:
Detoxification Process
Carefully place the suspect containers and lids on their sides in an eight-quart-volume or larger stockpot, pan, or boiling-water canner. Wash your hands thoroughly. Carefully add water to the pot. The water should completely cover the containers with a minimum of 1 inch of water above the containers. Avoid splashing the water. Place a lid on the pot and heat the water to boiling. Boil thirty minutes to ensure detoxifying the food and all container components. Cool and discard lids and food in the trash or bury in the soil.
Thoroughly clean all counters, containers, and equipment including can opener, clothing, and hands that may have come in contact with the food or the containers. Discard any sponges or washcloths that were used in the cleanup. Place them in a plastic bag and discard in the trash.
The cost of commercially canned special diet food often prompts interest in preparing these products at home. Some low-sugar and low-salt foods may be easily and safely canned at home. However, it may take some experimentation to create a product with the desired color, flavor, and texture. Start with a small batch and then make appropriate adjustments before producing large quantities.
PROCESS TIMES FOR FRUITS AND FRUIT PRODUCTS IN A DIAL-GAUGE PRESSURE CANNER*
How much should you can?
The amount of food to preserve for your family, either by canning or freezing, should be based on individual choices. The following table can serve as a worksheet to plan how much food you should can for use within a year.
There’s nothing quite like opening a jar of homepreserved strawberries in the middle of a winter snowstorm. It takes you right back to the warm early-summer sunshine, the smell of the strawberry patch’s damp earth, and the feel of the firm berries as you snipped them from the vines. Best of all, you get to indulge in the sweet, summery flavor even as the snow swirls outside the windows.
Preserving fruit is simple, safe, and it allows you to enjoy the fruits of your summer’s labor all year round. On the next pages you will find reference charts for processing various fruits and fruit products in a dial-gauge pressure canner or a weighted-gauge pressure canner. The same information is also included with each recipe’s directions. In some cases a boiling-water canner will serve better; for these instances, directions for its use are offered instead.
Adding syrup to canned fruit helps to retain its flavor, color, and shape, although it does not prevent spoilage. To maintain the most natural flavor, use the Very Light Syrup listed in the table found on page 181. Many fruits that are typically packed in heavy syrup are just as good—and a lot better for you—when packed in lighter syrups. However, if you’re preserving fruit that’s on the sour side, like cherries or tart apples, you might want to splurge on one of the sweeter versions.
Adding syrup to canned fruit helps to retain its flavor, color, and shape, although jars still need to be processed to prevent spoilage. Follow the chart below for syrups of varying sweetness. Light corn syrups or mild-flavored honey may be used to replace up to half the table sugar called for in syrups.
For hot packs, bring water and sugar to a boil, add fruit, reheat to a boil, and fill into jars immediately.
PROCESS TIMES FOR FRUITS AND FRUIT PRODUCTS IN A WEIGHTED-GAUGE PRESSURE CANNER*
SUGAR AND WATER IN SYRUP
Directions
The best apple juice is made from a blend of varieties. If you don’t have your own apple press, try to buy fresh juice from a local cider maker within twenty-four hours after it has been pressed.
Directions
PROCESS TIMES FOR APPLE JUICE IN A BOILING-WATER CANNER*
PROCESS TIMES FOR APPLE BUTTER IN A BOILING-WATER CANNER*
The best apple varieties to use for apple butter include Jonathan, Winesap, Stayman, Golden Delicious, and Macintosh apples, but any of your favorite varieties will work. Don’t bother to peel the apples, as you will strain the fruit before cooking it anyway. This recipe will yield eight to nine pints.
Ingredients
Directions
Besides being delicious on its own or paired with dishes like pork chops or latkes, applesauce can be used as a butter substitute in many baked goods. Select apples that are sweet, juicy, and crisp. For a tart flavor, add one to two pounds of tart apples to each three pounds of sweeter fruit.
Directions
PROCESS TIMES FOR APPLESAUCE IN A BOILING-WATER CANNER*
PROCESS TIMES FOR APPLESAUCE IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR APPLESAUCE IN A WEIGHTED-GAUGE PRESSURE CANNER*
Yield: About 8 to 9 pints
Directions
PROCESS TIME FOR SPICED APPLE RINGS IN A BOILING-WATER CANNER.
Apricots are excellent in baked goods, stuffing, chutney, or on their own. Choose firm, well-colored mature fruit for best results.
Directions
Preserved berries are perfect for use in pies, muffins, pancakes, or in poultry or pork dressings. Nearly every berry preserves well, including blackberries, blueberries, currants, dewberries, elderberries, gooseberries, huckleberries, loganberries, mulberries, and raspberries. Choose ripe, sweet berries with uniform color.
Directions
PROCESS TIMES FOR HALVED OR SLICED APRICOTS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR HALVED OR SLICED APRICOTS IN A WEIGHTED-GAUGE PRESSURE CANNER*
RECOMMENDED PROCESS TIMES FOR WHOLE BERRIES IN A BOILING-WATER CANNER*
PROCESS TIMES FOR WHOLE BERRIES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR WHOLE BERRIES IN A WEIGHTED-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR BERRY SYRUP IN A BOILING-WATER CANNER*
To make syrup with whole berries, rather than crushed, save 1 or 2 cups of the fresh or frozen fruit, combine these with the sugar, and simmer until soft. Remove from heat, skim off foam, and fill into clean jars, following processing directions for regular berry syrup.
Hot pack—(Best for blueberries, currants, elderberries, gooseberries, and huckleberries) Heat berries in boiling water for thirty seconds and drain. Fill jars and cover with hot juice, leaving ½-inch headspace.
Raw pack—Fill jars with any of the raw berries, shaking down gently while filling. Cover with hot syrup, juice, or water, leaving ½-inch headspace.
Juices from fresh or frozen blueberries, cherries, grapes, raspberries (black or red), and strawberries are easily made into toppings for use on ice cream and pastries. For an elegant finish to cheesecakes or pound cakes, drizzle a thin stream in a zigzag across the top just before serving. Berry syrups are also great additions to smoothies or milkshakes. This recipe makes about nine half-pints.
Directions
Almost any fruit can be puréed for use as baby food, in sauces, or just as a nutritious snack. Puréed prunes and apples can be used as a butter replacement in many baked goods. Use this recipe for any fruit except figs and tomatoes.
Directions
PROCESS TIMES FOR FRUIT PURÉES IN A BOILING-WATER CANNER*
PROCESS TIMES FOR FRUIT PURÉES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR FRUIT PURÉES IN A WEIGHTED-GAUGE PRESSURE CANNER*
Purple grapes are full of antioxidants and help to reduce the risk of heart disease, cancer, and Alzheimer’s disease. For juice, select sweet, well-colored, firm, mature fruit.
Directions
PROCESS TIMES FOR GRAPE JUICE IN A BOILING-WATER CANNER*
Peaches are delicious in cobblers, crisps, and muffins, or grilled for a unique cake topping. Choose ripe, mature fruit with minimal bruising.
Directions
Hot pack—In a large saucepan, place drained fruit in syrup, water, or juice and bring to boil. Fill jars with hot fruit and cooking liquid, leaving ½-inch headspace. Place halves in layers, cut side down.
Raw pack—Fill jars with raw fruit, cut side down, and add hot water, juice, or syrup, leaving ½-inch headspace.
3. Adjust lids and process.
Choose ripe, mature fruit for best results. For a special treat, filled halved pears with a mixture of chopped dried apricots, pecans, brown sugar, and butter; bake or microwave until warm and serve with vanilla ice cream.
PROCESS TIMES FOR HALVED OR SLICED PEACHES IN A BOILING-WATER CANNER*
PROCESS TIMES FOR HALVED OR SLICED PEACHES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR HALVED OR SLICED PEACHES IN A WEIGHTED-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR HALVED PEARS IN A BOILING-WATER CANNER*
PROCESS TIMES FOR HALVED PEARS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR HALVED PEARS IN A WEIGHTED-GAUGE PRESSURE CANNER*
Directions
Rhubarb in the garden is a sure sign that spring has sprung and summer is well on its way. But why not enjoy rhubarb all year round? The brilliant red stalks make it as appropriate for a holiday table as for an early summer feast. Rhubarb is also delicious in crisps, cobblers, or served hot over ice cream. Select young, tender, well-colored stalks from the spring or, if available, late fall crop.
PROCESS TIMES FOR STEWED RHUBARB IN A BOILING-WATER CANNER*
PROCESS TIMES FOR STEWED RHUBARB IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR STEWED RHUBARB IN A WEIGHTED-GAUGE PRESSURE CANNER*
Directions
Using a pre-made pie filling will cut your pie preparation time by more than half, but most commercially produced fillings are oozing with high fructose corn syrup and all manner of artificial coloring and flavoring. (Food coloring is not at all necessary, but if you’re really concerned about how the inside of your pie will look, appropriate amounts are added to each recipe as an optional ingredient.) Making and preserving your own pie fillings means that you can use your own fresh ingredients and adjust the sweetness to your taste. Because some folks like their pies rich and sweet and others prefer a natural tart flavor, you might want to first make a single quart, make a pie with it, and see how you like it. Then you can adjust the sugar and spices in the recipe to suit your personal preferences before making a large batch. Experiment with combining fruits or adding different spices, but the amount of lemon juice should not be altered, as it aids in controlling the safety and storage stability of the fillings.
When using frozen cherries and blueberries, select unsweetened fruit. If sugar has been added, rinse it off while fruit is frozen. Thaw fruit, then collect, measure, and use juice from fruit to partially replace the water specified in the recipe.
These recipes use Clear Jel® (sometimes sold as Clear Jel A®), a chemically modified cornstarch that produces excellent sauce consistency even after fillings are canned and baked. By using Clear Jel® you can lower the sugar content of your fillings without sacrificing safety, flavor, or texture. (Note: Instant Clear Jel® is not meant to be cooked and should not be used for these recipes. Sure-Gel® is a natural fruit pectin and is not a suitable substitute for Clear Jel®. Cornstarch, tapioca starch, or arrowroot starch can be used in place of Clear Jel®, but the finished product is likely to be runny.) One pound of Clear Jel® costs less than five dollars and is enough to make fillings for about fourteen pies. It will keep for at least a year if stored in a cool, dry place. Clear Jel® is increasingly available among canning and freezing supplies in some stores. Alternately, you can order it by the pound at any of the following online stores:
Use firm, crisp apples, such as Stayman, Golden Delicious, or Rome varieties for the best results. If apples lack tartness, use an additional ¼ cup of lemon juice for each six quarts of slices. Ingredients are included for a one-quart (enough for one 8-inch pie) or a seven-quart recipe.
Directions
Ingredients
1 Quart | 7 Quarts | |
---|---|---|
Blanched, sliced fresh apples | 3½ cups | 6 quarts |
Granulated sugar | ¾ cup + 2 tbsp | 5 ½ cups |
Clear Jel® | ¼ cup | 1 ½ cup |
Cinnamon | ½ tsp | 1 tbsp |
Cold water | ½ cup | 2 ½ cups |
Apple juice | ¾ cup | 5 cups |
Bottled lemon juice | 2 tbsp | ¾ cup |
Nutmeg (optional) | ⅛ tsp | 1 tsp |
PROCESS TIMES FOR APPLE PIE FILLING IN A BOILING-WATER CANNER*
Select fresh, ripe, and firm blueberries. Unsweetened frozen blueberries may be used. If sugar has been added, rinse it off while fruit is still frozen. Thaw fruit, then collect, measure, and use juice from fruit to partially replace the water specified in the recipe. Ingredients are included for a one-quart (enough for one 8-inch pie) or seven-quart recipe.
Directions
Ingredients
1 Quart | 7 Quarts | |
---|---|---|
Fresh or thawed blue berries | 3½ cups | 6 quarts |
Granulated sugar | ¾ cup + 2 tbsp | 6 cups |
Clear Jel® | ¼ cup + 1 tbsp | 2¼ cups |
Cold water | 1 cup | 7 cups |
Bottled lemon juice | 3½ cups | ½ cup |
Blue food coloring (optional) | 3 drops | 20 drops |
Red food coloring (optional) | 1 drop | 7 drops |
PROCESS TIMES FOR BLUEBERRY PIE FILLING IN A BOILING-WATER CANNER*
Select fresh, very ripe, and firm cherries. Unsweetened frozen cherries may be used. If sugar has been added, rinse it off while the fruit is still frozen. Thaw fruit, then collect, measure, and use juice from fruit to partially replace the water specified in the recipe. Ingredients are included for a one-quart (enough for one 8-inch pie) or seven-quart recipe.
Directions
Ingredients
1 Quart | 7 Quarts | |
---|---|---|
Fresh or thawed sour cherries | 3⅓ cups | 6 quarts |
Granulated sugar | 1 cup | 7 cups |
Clear Jel® | ¼ cup + 1 tbsp | 1¾ cups |
Cold water | 1⅓ cups | 9⅓ cups |
Bottled lemon juice | 1 tbsp + 1 tsp | ½ cup |
Cinnamon (optional) | ⅛ tsp | 1 tsp |
Almond extract (optional) | ¼ tsp | 2 tsps |
Red food coloring (optional) | 6 drops | ¼ tsp |
PROCESS TIMES FOR CHERRY PIE FILLING IN A BOILING-WATER CANNER*
Mincemeat pie originated as “Christmas Pie” in the eleventh century, when the English crusaders returned from the Holy Land bearing oriental spices. They added three of these spices—cinnamon, cloves, and nutmeg—to their meat pies to represent the three gifts that the magi brought to the Christ child. Mincemeat pies are traditionally small and are perfect paired with a mug of hot buttered rum. Walnuts or pecans can be used in place of meat if preferred. This recipe yields about seven quarts.
Ingredients
Directions
PROCESS TIMES FOR FESTIVE MINCEMEAT PIE FILLING IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR FESTIVE MINCEMEAT PIE FILLING IN A WEIGHTED-GAUGE PRESSURE CANNER*
Homemade jams and jellies have lots more flavor than store-bought, over-processed varieties. The combinations of fruits and spices are limitless, so have fun experimenting with these recipes. If you can bear to part with your creations when you’re all done, they make wonderful gifts for any occasion.
Pectin is what makes jams and jellies thicken and gel. Many fruits, such as crab apples, citrus fruits, sour plums, currants, quinces, green apples, or Concord grapes, have plenty of their own natural pectin, so there’s no need to add more pectin to your recipes. You can use less sugar when you don’t add pectin, but you will have to boil the fruit for longer. Still, the process is relatively simple and you don’t have to worry about having store-bought pectin on hand.
To use fresh fruits with a low pectin content or canned or frozen fruit juice, powdered or liquid pectin must be added for your jams and jellies to thicken and set properly. Jelly or jam made with added pectin requires less cooking and generally gives a larger yield. These products have more natural fruit flavors, too. In addition, using added pectin eliminates the need to test hot jellies and jams for proper gelling.
If you are not sure if a fruit has enough of its own pectin, combine 1 tablespoon of rubbing alcohol with 1 tablespoon of extracted fruit juice in a small glass. Let stand 2 minutes. If the mixture forms into one solid mass, there’s plenty of pectin. If you see several weak blobs, you need to add pectin or combine with another high-pectin fruit.
Beginning this section are descriptions of the differences between methods and tips for success with whichever you use.
Jelly without Added Pectin
Making jelly without added pectin is not an exact science. You can add a little more or less sugar according to your taste, substitute honey for up to ½ of the sugar, or experiment with combining small amounts of low-pectin fruits with other high-pectin fruits. The Ingredients table below shows you the basics for common high-pectin fruits. Use it as a guideline as you experiment with other fruits.
Commercially frozen and canned juices may be low in natural pectins and make soft textured spreads.
As fruit ripens, its pectin content decreases, so use fruit that has recently been picked, and mix ¾ ripe fruit with ¼ under-ripe. Cooking cores and peels along with the fruit will also increase the pectin level. Avoid using canned or frozen fruit as they contain very little pectin. Be sure to wash all fruit thoroughly before cooking. One pound of fruit should yield at least 1 cup of clear juice.
Directions
Ingredients
Temperature test—Use a jelly or candy thermometer and boil until mixture reaches the following temperatures:
Sheet or spoon test—Dip a cool metal spoon into the boiling jelly mixture. Raise the spoon about 12 inches above the pan (out of steam). Turn the spoon so the liquid runs off the side. The jelly is done when the syrup forms two drops that flow together and sheet or hang off the edge of the spoon.
PROCESS TIMES FOR JELLY WITHOUT ADDED PECTIN IN A BOILING WATER CANNER*
Preventing spoilage
Even though sugar helps preserve jellies and jams, molds can grow on the surface of these products. Research now indicates that the mold which people usually scrape off the surface of jellies may not be as harmless as it seems. Mycotoxins have been found in some jars of jelly having surface mold growth. Mycotoxins are known to cause cancer in animals; their effects on humans are still being researched. Because of possible mold contamination, paraffin or wax seals are no longer recommended for any sweet spread, including jellies. To prevent growth of molds and loss of good flavor or color, fill products hot into sterile Mason jars, leaving ¼-inch headspace, seal with self-sealing lids, and process five minutes in a boiling-water canner. Correct process time at higher elevations by adding one additional minute per 1,000 feet above sea level. If unsterile jars are used, the filled jars should be processed ten minutes. Use of sterile jars is preferred, especially when fruits are low in pectin, since the added five-minute process time may cause weak gels.
Lemon curd is a rich, creamy spread that can be used on (or in) a variety of teatime treats—crumpets, scones, cake fillings, tartlets, or meringues are all enhanced by its tangy-sweet flavor. Follow the recipe carefully, as variances in ingredients, order, and temperatures may lead to a poor texture or flavor. For Lime Curd, use the same recipe but substitute 1 cup bottled lime juice and ¼ cup fresh lime zest for the lemon juice and zest. This recipe yields about three to four half-pints.
Ingredients
Directions
PROCESS TIMES FOR LEMON CURD IN A BOILING-WATER CANNER*
Making jam is even easier than making jelly, as you don’t have to strain the fruit. However, you’ll want to be sure to remove all stems, skins, and pits. Be sure to wash and rinse all fruits thoroughly before cooking, but don’t let them soak. For best flavor, use fully ripe fruit. Use the ingredients table below as a guideline as you experiment with less common fruits.
Ingredients
Temperature test—Use a jelly or candy thermometer and boil until mixture reaches the temperature for your altitude.
Refrigerator test—Remove the jam mixture from the heat. Pour a small amount of boiling jam on a cold plate and put it in the freezer compartment of a refrigerator for a few minutes. If the mixture gels, it is ready to fill.
PROCESS TIMES FOR JAMS WITHOUT ADDED PECTIN IN A BOILING-WATER CANNER*
To use fresh fruits with a low pectin content or canned or frozen fruit juice, powdered or liquid pectin must be added for your jams and jellies to thicken and set properly. Jelly or jam made with added pectin requires less cooking and generally gives a larger yield. These products have more natural fruit flavors, too. In addition, using added pectin eliminates the need to test hot jellies and jams for proper gelling.
Commercially produced pectin is a natural ingredient, usually made from apples and available at most grocery stores. There are several types of pectin now commonly available; liquid, powder, low-sugar, and no-sugar pectins each have their own advantages and downsides. Pomona’s Universal Pectin is a citrus pectin that allows you to make jams and jellies with little or no sugar. Because the order of combining ingredients depends on the type of pectin used, it is best to follow the common jam and jelly recipes that are included right on most pectin packages. How ever, if you want to try something a little different, follow one of the following recipes for mixed fruit and spiced fruit jams and jellies.
PROCESS TIMES FOR JAMS AND JELLIES WITH ADDED PECTIN IN A BOILING-WATER CANNER*
This is a delicious jam perfect for making at the end of autumn, just before the frost gets the last apples. For a warming, spicy twist add a teaspoon of fresh grated ginger along with the cinnamon. This recipe yields seven to eight half-pints.
Ingredients
Directions
PROCESS TIMES FOR PEAR-APPLE JAM IN A BOILING WATER CANNER*
Strawberry-rhubarb jelly will turn any ordinary piece of bread into a delightful treat. You can also spread it on shortcake or pound cake for a simple and unique dessert. This recipe yields about seven half-pints.
Ingredients
Directions
PROCESS TIMES FOR STRAWBERRY-RHUBARB JELLY IN A BOILING-WATER CANNER*
PROCESS TIMES FOR BLUEBERRY-SPICE JAM IN A BOILING-WATER CANNER*
This is a summery treat that is delicious spread over waffles with a little butter. Using wild blueberries results in a stronger flavor, but cultivated blueberries also work well. This recipe yields about five half-pints.
Ingredients
Directions
If you think peanut butter and jelly sandwiches are only for kids, try grape-plum jelly spread with a natural nut butter over a thick slice of whole wheat bread. You’ll change your mind. This recipe yields about 10 half-pints.
Ingredients
Directions
A variety of fruit spreads may be made that are tasteful, yet lower in sugars and calories than regular jams and jellies. The most straightforward method is probably to buy low-sugar pectin and follow the directions on the package, but the recipes below show alternate methods of using gelatin or fruit pulp as thickening agents. Gelatin recipes should not be processed and should be refrigerated and used within four weeks.
PROCESS TIMES FOR GRAPE-PLUM JELLY IN A BOILING-WATER CANNER*
This recipe may be made with any combination of peaches, nectarines, apricots, and plums. You can use no sugar, up to two cups of sugar, or a combination of sugar and another sweetener (such as honey, Splenda , or agave nectar). Note that if you use aspartame, the spread may lose its sweetness within three to four weeks. Add cinnamon or star anise if desired. This recipe yields five to six half-pints.
Ingredients
Directions
PROCESS TIMES FOR PEACH-PINEAPPLE SPREAD IN A BOILING-WATER CANNER*
This recipe uses gelatin as a thickener, so it does not require processing but it should be refrigerated and used within four weeks. For spiced apple jelly, add two sticks of cinnamon and four whole cloves to mixture before boiling. Remove both spices before adding the sweetener and food coloring (if desired). This recipe yields four half-pints.
Ingredients
Directions
This is a simple, tasty recipe that doesn’t require processing. Be sure to refrigerate and use within four weeks. This recipe makes three half-pints.
Ingredients
Directions
Sometimes jelly just doesn’t turn out right the first time. Jelly that is too soft can be used as a sweet sauce to drizzle over ice cream, cheesecake, or angel food cake, but it can also be re-cooked into the proper consistency.
Temperature test—Use a jelly or candy thermometer and boil until mixture reaches the following temperatures at the altitudes below:
Sheet or spoon test—Dip a cool metal spoon into the boiling jelly mixture. Raise the spoon about 12 inches above the pan (out of steam). Turn the spoon so the liquid runs off the side. The jelly is done when the syrup forms two drops that flow together and sheet or hang off the edge of the spoon.
PROCESS TIMES FOR REMADE SOFT JELLIES IN A BOILING-WATER CANNER*
Shelled or dried beans and peas are inexpensive and easy to buy or store in bulk, but they are not very convenient when it comes to preparing them to eat. Hydrating and canning beans or peas enable you to simply open a can and use them rather than waiting for them to soak. Sort and discard discolored seeds before rehydrating.
Directions
PROCESS TIMES FOR BEANS OR PEAS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR BEANS OR PEAS IN A WEIGHTED-GAUGE PRESSURE CANNER*
Baked beans are an old New England favorite, but every cook has his or her favorite variation. Two recipes are included here, but feel free to alter them to your own taste.
Directions
Tomato Sauce—Mix 1 quart tomato juice, 3 tablespoons sugar, 2 teaspoons salt, 1 tablespoon chopped onion, and ¼ teaspoon each of ground cloves, allspice, mace, and cayenne pepper. Heat to boiling. Add 3 quarts cooking liquid from beans and bring back to boiling.
Molasses Sauce—Mix 4 cups water or cooking liquid from beans, 3 tablespoons dark molasses, 1 tablespoon vinegar, 2 teaspoons salt, and ¾ teaspoon powdered dry mustard. Heat to boiling.
PROCESS TIMES FOR BAKED BEANS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR BAKED BEANS IN A WEIGHTED-GAUGE PRESSURE CANNER*
This process will work equally well for snap, Italian, or wax beans. Select filled but tender, crisp pods, removing any diseased or rusty pods.
Directions
Hot pack—Cover with boiling water; boil 5 minutes. Fill jars loosely, leaving 1-inch headspace.
Raw pack—Fill jars tightly with raw beans, leaving 1-inch headspace. Add 1 teaspoon of salt per quart to each jar, if desired. Add boiling water, leaving 1-inch headspace.
PROCESS TIMES FOR GREEN BEANS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR GREEN BEANS IN A WEIGHTED-GAUGE PRESSURE CANNER*
You can preserve beets whole, cubed, or sliced, according to your preference. Beets that are 1 to 2 inches in diameter are the best, as larger ones tend to be too fibrous.
Directions
Carrots can be preserved sliced or diced according to your preference. Choose small carrots, preferably 1 to 1¼ inches in diameter, as larger ones are often too fibrous.
PROCESS TIMES FOR BEETS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR BEETS IN A WEIGHTED-GAUGE PRESSURE CANNER*
Directions
Hot pack—Cover with boiling water; bring to boil and simmer for 5 minutes. Fill jars with carrots, leaving 1-inch headspace.
Raw pack—Fill jars tightly with raw carrots, leaving 1-inch headspace.
The creamy texture comes from scraping the corncobs thoroughly and including the juices and corn pieces with the kernels. If you want to add milk or cream, butter, or other ingredients, do so just before serving (do not add dairy products before canning). Select ears containing slightly immature kernels for this recipe.
Directions
Hot pack—To each quart of corn and scrapings in a saucepan, add 2 cups of boiling water. Heat to boiling. Add ½ teaspoon salt to each jar, if desired. Fill pint jars with hot corn mixture, leaving 1-inch headspace.
Raw pack—Fill pint jars with raw corn, leaving 1-inch headspace. Do not shake or press down. Add ½ teaspoon salt to each jar, if desired. Add fresh boiling water, leaving 1-inch headspace.
PROCESS TIMES FOR CARROTS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR CARROTS IN A WEIGHTED-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR CREAM STYLE CORN IN A DIAL-GAUGE PRESSURE CANNER
PROCESS TIMES FOR CREAM STYLE CORN IN A WEIGHTED-GAUGE PRESSURE CANNER*
Select ears containing slightly immature kernels. Canning of some sweeter varieties or kernels that are too immature may cause browning. Try canning a small amount to test color and flavor before canning large quantities.
Directions
Hot pack—To each quart of kernels in a saucepan, add 1 cup of hot water, heat to boiling, and simmer 5 minutes. Add 1 teaspoon of salt per quart to each jar, if desired. Fill jars with corn and cooking liquid, leaving 1-inch headspace.
Raw pack—Fill jars with raw kernels, leaving 1-inch headspace. Do not shake or press down. Add 1 teaspoon of salt per quart to the jar, if desired.
PROCESS TIMES FOR WHOLE KERNEL CORN IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR WHOLE KERNEL CORN IN A WEIGHTED-GAUGE PRESSURE CANNER*
Use mixed vegetables in soups, casseroles, pot pies, or as a quick side dish. You can change the suggested proportions or substitute other favorite vegetables, but avoid leafy greens, dried beans, cream-style corn, winter squash, and sweet potatoes as they will ruin the consistency of the other vegetables. This recipe yields about seven quarts.
Ingredients
PROCESS TIMES FOR MIXED VEGETABLES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR MIXED VEGETABLES IN A WEIGHTED-GAUGE PRESSURE CANNER*
Directions
Green and English peas preserve well when canned, but sugar snap and Chinese edible pods are better frozen. Select filled pods containing young, tender, sweet seeds, and discard any diseased pods.
Directions
Hot pack—Cover with boiling water. Bring to a boil in a saucepan, and boil 2 minutes. Fill jars loosely with hot peas, and add cooking liquid, leaving 1-inch headspace.
Raw pack—Fill jars with raw peas, and add boiling water, leaving 1-inch headspace. Do not shake or press down peas.
PROCESS TIMES FOR PEAS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR PEAS IN A WEIGHTED-GAUGE PRESSURE CANNER*
Sweet potatoes can be preserved whole, in chunks, or in slices, according to your preference. Choose small to medium-sized potatoes that are mature and not too fibrous. Can within one to two months after harvest.
Directions
Pumpkin and squash are great to have on hand for use in pies, soups, quick breads, or as side dishes. They should have a hard rind and stringless, mature pulp. Small pumpkins (sugar or pie varieties) are best. Before using for pies, drain jars and strain or sieve pumpkin or squash cubes.
Directions
PROCESS TIMES FOR SWEET POTATOES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR SWEET POTATOES IN A WEIGHTED-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR PUMPKIN AND WINTER SQUASH IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR PUMPKIN AND WINTER SQUASH IN A WEIGHTED-GAUGE PRESSURE CANNER*
To spice up this simple, satisfying dish, add a little paprika and celery salt before serving. It is also delicious made into a pot pie, with or without added chicken, turkey, or beef. This recipe yields seven quarts.
Ingredients
Directions
Hot pack—Combine all prepared vegetables in a large kettle with enough water to cover the pieces. Add 1 teaspoon salt to each quart jar, if desired. Boil gently 5 minutes and fill jars with pieces and cooking liquid, leaving 1-inch headspace.
Raw pack—Fill jars with equal parts of all prepared vegetables, leaving 1-inch headspace. Do not shake or press down pieces. Add 1 teaspoon salt to each quart jar, if desired. Add fresh boiling water, leaving 1-inch headspace.
PROCESS TIMES FOR SUCCOTASH IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR SUCCOTASH IN A WEIGHTED-GAUGE PRESSURE CANNER*
Vegetable, dried bean or pea, meat, poultry, or seafood soups can all be canned. Add pasta, rice, or other grains to soup just prior to serving, as grains tend to get soggy when canned. If dried beans or peas are used, they must be fully rehydrated first. Dairy products should also be avoided in the canning process.
Directions
PROCESS TIMES FOR SOUPS IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR SOUPS IN A WEIGHTED-GAUGE PRESSURE CANNER*
“Good broth will resurrect the dead,” says a South American proverb. Bones contain calcium, magnesium, phosphorus, and other trace minerals, while cartilage and tendons hold glucosamine, which is important for joints and muscle health. When simmered for extended periods, these nutrients are released into the water and broken down into a form that our bodies can absorb. Not to mention that good broth is the secret to delicious risotto, reduction sauces, gravies, and dozens of other gourmet dishes.
Beef
PROCESS TIMES FOR MEAT STOCK IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR MEAT STOCK IN A WEIGHTED-GAUGE PRESSURE CANNER*
Chicken or Turkey
Fermented Foods and Pickled Vegetables
Pickled vegetables play a vital role in Italian antipasto dishes, Chinese stir-fries, British piccalilli, and much of Russian and Finnish cuisine. And, of course, the Germans love their sauerkraut, kimchee is found on nearly every Korean dinner table, and many an American won’t eat a sandwich without a good strong dill pickle on the side.
Fermenting vegetables is not complicated, but you’ll want to have the proper containers, covers, and weights ready before you begin. For containers, keep the following in mind:
Some vegetables, like cabbage and cucumbers, need to be kept 1 to 2 inches under brine while fermenting. If you find them floating to top of the container, here are some suggestions:
Be sure to wash the fermentation container, plate, and jars in hot sudsy water, and rinse well with very hot water before use.
Regular dill pickles and sauerkraut are fermented and cured for about three weeks. Refrigerator dills are fermented for about one week. During curing, colors and flavors change and acidity increases. Fresh-pack or quick-process pickles are not fermented; some are brined several hours or overnight, then drained and covered with vinegar and seasonings. Fruit pickles usually are prepared by heating fruit in a seasoned syrup acidified with either lemon juice or vinegar. Relishes are made from chopped fruits and vegetables that are cooked with seasonings and vinegar.
Be sure to remove and discard a -inch slice from the blossom end of fresh cucumbers. Blossoms may contain an enzyme which causes excessive softening of pickles.
Caution: The level of acidity in a pickled product is as important to its safety as it is to taste and texture.
Ingredients
Select fresh, firm fruits or vegetables free of spoilage. Measure or weigh amounts carefully, because the proportion of fresh food to other ingredients will affect flavor and, in many instances, safety.
Use canning or pickling salt. Noncaking material added to other salts may make the brine cloudy. Since flake salt varies in density, it is not recommended for making pickled and fermented foods. White granulated and brown sugars are most often used. Corn syrup and honey, unless called for in reliable recipes, may produce undesirable flavors. White distilled and cider vinegars of 5 percent acidity (50 grain) are recommended. White vinegar is usually preferred when light color is desirable, as is the case with fruits and cauliflower.
Pickles with reduced salt content
In the making of fresh-pack pickles, cucumbers are acidified quickly with vinegar. Use only tested recipes formulated to produce the proper acidity. While these pickles may be prepared safely with reduced or no salt, their quality may be noticeably lower. Both texture and flavor may be slightly, but noticeably, different than expected. You may wish to make small quantities first to determine if you like them.
However, the salt used in making fermented sauerkraut and brined pickles not only provides characteristic flavor but also is vital to safety and texture. In fermented foods, salt favors the growth of desirable bacteria while inhibiting the growth of others. Caution: Do not attempt to make sauerkraut or fermented pickles by cutting back on the salt required.
Preventing spoilage
Pickle products are subject to spoilage from microorganisms, particularly yeasts and molds, as well as enzymes that may affect flavor, color, and texture. Processing the pickles in a boiling-water canner will prevent both of these problems. Standard canning jars and self-sealing lids are recommended. Processing times and procedures will vary according to food acidity and the size of food pieces.
Feel free to alter the spices in this recipe, but stick to the same proportion of cucumbers, vinegar, and water. Check the label of your vinegar to be sure it contains 5 percent acetic acid. Fully fermented pickles may be stored in the original container for about four to six months, provided they are refrigerated and surface scum and molds are removed regularly, but canning is a better way to store fully fermented pickles.
Ingredients
Directions
Low-Temperature Pasteurization Treatment
The following treatment results in a better product texture but must be carefully managed to avoid possible spoilage.
PROCESS TIMES FOR DILL PICKLES IN A BOILING-WATER CANNER*
For the best sauerkraut, use firm heads of fresh cabbage. Shred cabbage and start kraut between twenty-four and forty-eight hours after harvest. This recipe yields about nine quarts.
Ingredients
Directions
Note: If you weigh the cabbage down with a brine-filled bag, do not disturb the crock until normal fermentation is completed (when bubbling ceases). If you use jars as weight, you will have to check the kraut 2 to 3 times each week and remove scum if it forms. Fully fermented kraut may be kept tightly covered in the refrigerator for several months or it may be canned as follows:
Hot pack—Bring kraut and liquid slowly to a boil in a large kettle, stirring frequently. Remove from heat and fill jars rather firmly with kraut and juices, leaving ½-inch headspace.
Raw pack—Fill jars firmly with kraut and cover with juices, leaving ½-inch headspace.
This is a great side dish to bring to a summer picnic or potluck. Feel free to add or adjust spices to your taste. This recipe yields about five to six half-pints.
Ingredients
Directions
PROCESS TIMES FOR PICKLED THREE-BEAN SALAD IN A BOILING WATER CANNER*
Select horseradish roots that are firm and have no mold, soft spots, or green spots. Avoid roots that have begun to sprout. The pungency of fresh horseradish fades within one to two months, even when refrigerated, so make only small quantities at a time. This recipe yields about two half-pints.
Ingredients
Directions
Any combination of bell, Hungarian, banana, or jalapeño peppers can be used in this recipe. Use more jalapeño peppers if you want your mix to be hot, but remember to wear rubber or plastic gloves while handling them or wash hands thoroughly with soap and water before touching your face. This recipe yields about nine half-pints.
Ingredients
PROCESS TIMES FOR MARINATED PEPPERS IN A BOILING-WATER CANNER*
Directions
Oven or broiler method—Place peppers in a hot oven (400°F) or broiler for 6 to 8 minutes or until skins blister.
Range-top method—Cover hot burner, either gas or electric, with heavy wire mesh. Place peppers on burner for several minutes until skins blister.
Piccalilli is a nice accompaniment to roasted or braised meats and is common in British and Indian meals. It can also be mixed with mayonnaise or crème fraîche as the basis of a French remoulade. This recipe yields nine half-pints.
Ingredients
Directions
PROCESS TIMES FOR PICCALILLI IN A BOILING-WATER CANNER
These slightly sweet, spiced pickles will add flavor and crunch to any sandwich. If desired, slender (1 to 1½ inches in diameter) zucchini or yellow summer squash can be substituted for cucumbers. After processing and cooling, jars should be stored four to five weeks to develop ideal flavor. This recipe yields about eight pints.
Ingredients
Directions
Low-Temperature Pasteurization Treatment
The following treatment results in a better product texture but must be carefully managed to avoid possible spoilage.
Variation for firmer pickles: Wash cucumbers. Cut inch off blossom end and discard. Cut into
-inch slices. Mix 1 cup pickling lime and ½ cup salt to 1 gallon water in a 2- to 3-gallon crock or enamelware container. Avoid inhaling lime dust while mixing the lime-water solution. Soak cucumber slices in lime water for twelve to twenty-four hours, stirring occasionally. Remove from lime solution, rinse, and resoak one hour in fresh cold water. Repeat the rinsing and soaking steps two more times. Handle carefully, as slices will be brittle. Drain well.
For best results, pickle cucumbers within twenty-four hours of harvesting, or immediately after purchasing. This recipe yields seven to nine pints.
Ingredients
PROCESS TIMES FOR BREAD-AND-BUTTER PICKLES IN A BOILING-WATER CANNER*
Directions
PROCESS TIMES FOR QUICK FRESH-PACK DILL PICKLES IN A BOILING-WATER CANNER*
PROCESS TIMES FOR PICKLE RELISH IN A BOILING-WATER CANNER*
A food processor will make quick work of chopping the vegetables in this recipe. Yields about nine pints.
Ingredients
Directions
Quick and simple to prepare, these are the sweet pickles to make when you’re short on time. After processing and cooling, jars should be stored four to five weeks to develop ideal flavor. If desired, add two slices of raw whole onion to each jar before filling with cucumbers. This recipe yields about seven to nine pints.
Ingredients
Directions
PROCESS TIMES FOR QUICK SWEET PICKLES IN A BOILING-WATER CANNER*
Hot pack—Add cucumbers and heat slowly until vinegar solution returns to boil. Stir occasionally to make sure mixture heats evenly. Fill sterile jars, leaving ½-inch headspace.
Raw pack—Fill jars, leaving ½-inch headspace.
Variation for firmer pickles: Wash cucumbers. Cut inch off blossom end and discard, but leave ¼ inch of stem attached. Slice or strip cucumbers. Mix 1 cup pickling lime and ⅓ cup salt with 1 gallon water in a 2- to 3-gallon crock or enamelware container. Caution: Avoid inhaling lime dust while mixing the lime-water solution. Soak cucumber slices or strips in lime-water solution for twelve to twenty-four hours, stirring occasionally. Remove from lime solution, rinse, and soak 1 hour in fresh cold water. Repeat the rinsing and soaking two more times. Handle carefully, because slices or strips will be brittle. Drain well.
Whole allspice can be tricky to find. If it’s not available at your local grocery store, it can be ordered at www.spicebarn.com or at www.gourmetsleuth.com. This recipe yields about four to five pints.
Ingredients
Canning syrup:
Brining solution:
Directions
PROCESS TIMES FOR REDUCED-SODIUM SLICED SWEET PICKLES IN A BOILING-WATER CANNER*
Tomatoes
Canned tomatoes should be a staple in every cook’s pantry. They are easy to prepare and, when made with garden-fresh produce, make ordinary soups, pizza, or pastas into five-star meals. Be sure to select only disease-free, preferably vine-ripened, firm fruit. Do not can tomatoes from dead or frost-killed vines.
Green tomatoes are more acidic than ripened fruit and can be canned safely with the following recommendations.
Tomato juice is a good source of vitamin A and C and is tasty on its own or in a cocktail. It’s also the secret ingredient in some very delicious cakes. If desired, add carrots, celery, and onions, or toss in a few jalapeños for a little kick.
Directions
PROCESS TIMES FOR TOMATO JUICE IN A BOILING-WATER CANNER*
PROCESS TIMES FOR TOMATO JUICE IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR TOMATO JUICE IN A WEIGHTED-GAUGE PRESSURE CANNER
Crushed tomatoes are great for use in soups, stews, thick sauces, and casseroles. Simmer crushed tomatoes with kidney beans, chili powder, sautéed onions, and garlic to make an easy pot of chili.
Directions
PROCESS TIMES FOR CRUSHED TOMATOES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR CRUSHED TOMATOES IN A WEIGHTED-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR CRUSHED TOMATOES IN A BOILING-WATER CANNER*
This plain tomato sauce can be spiced up before using in soups or in pink or red sauces. The thicker you want your sauce, the more tomatoes you’ll need.
Directions
PROCESS TIMES FOR TOMATO SAUCE IN A BOILING-WATER CANNER*
PROCESS TIMES FOR TOMATO SAUCE IN A DIAL-GAUGE PRESSURE CANNER*
For thin sauce:
For thick sauce:
PROCESS TIMES FOR TOMATO SAUCE IN A WEIGHTED-GAUGE PRESSURE CANNER*
Whole or halved tomatoes are used for scalloped tomatoes, savory pies (baked in a pastry crust with parmesan cheese, mayonnaise, and seasonings), or stewed tomatoes.
Directions
PROCESS TIMES FOR WATER-PACKED WHOLE TOMATOES IN A BOILING-WATER CANNER*
PROCESS TIMES FOR WATER-PACKED WHOLE TOMATOES IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR WATER-PACKED WHOLE TOMATOES IN A WEIGHTED-GAUGE PRESSURE CANNER*
Homemade spaghetti sauce is like a completely different food than store-bought varieties—it tastes fresher, is more flavorful, and is far more nutritious. Adjust spices to taste, but do not increase proportions of onions, peppers, or mushrooms. This recipe yields about nine pints.
Ingredients
PROCESS TIMES FOR SPAGHETTI SAUCE WITHOUT MEAT IN A DIAL-GAUGE PRESSURE CANNER*
PROCESS TIMES FOR SPAGHETTI SAUCE WITHOUT MEAT IN A WEIGHTED-GAUGE PRESSURE CANNER*
Directions
Ketchup forms the base of several condiments, including Thousand Island dressing, fry sauce, and barbecue sauce. And, of course, it’s an American favorite in its own right. This recipe yields six to seven pints.
Ingredients
Directions
For fantastic nachos, cover corn chips with chile salsa, add shredded Monterey jack or cheddar cheese, bake under broiler for about five minutes, and serve with guacamole and sour cream. Be sure to wear rubber gloves while handling chiles or wash hands thoroughly with soap and water before touching your face. This recipe yields six to eight pints.
PROCESS TIMES FOR TOMATO KETCHUP IN A BOILING-WATER CANNER*
PROCESS TIMES FOR CHILE SALSA IN A BOILING-WATER CANNER*
Ingredients
Directions
Oven or broiler method: Place chiles in oven (400°F) or broiler for 6 to 8 minutes until skins blister. Cool and slip off skins.
Range-top method: Cover hot burner, either gas or electric, with heavy wire mesh. Place chiles on burner for several minutes until skins blister. Allow peppers to cool. Place in a pan and cover with a damp cloth. This will make peeling the peppers easier. After several minutes, peel each pepper.