SMOKING

Curing is one way of preserving food, smoking it is another. However, without curing, smoking is relatively ineffectual and cured and smoked food lasts longer than either process alone. This is because the smoke acts in two ways: to dry the food and to sanitise (sterilise) the outside of it.

Smoking is both an art and a science, and good, consistent smoking can take years to perfect. The good news for the home smoker is that just about anything you smoke yourself will taste better than most of the stuff you buy. Partly it’s because you know what goes into your food and can eat it shortly after smoking, and partly because so many ‘smoked’ products aren’t actually smoked at all, just flavoured with a smoky-tasting chemical or residue.

The important things to think of when smoking are how you will cure the ingredient, whether you’ll hot or cold smoke it, and what kind of smoke you’ll create. Not only are various woods used, you can also use tea, sugar and anything natural that burns. But there are some limitations. For any kind of smoking you must not use resinous wood. This includes many soft woods, but in particular avoid using pine. Good hardwood isn’t resinous, so the wood from most fruit trees is a good option as it produces a flavoursome smoke, each variety with its own unique properties. The wood for smoke is important, but you can control flavour just as much with the brine and cure. We use Tasmanian hardwood for much of our smoking because it’s plentiful, cheap (free when we cut firewood) and works well with full-flavoured free-range old-breed pork.

Building your own smoker can be as rudimentary or as complicated as you want. An old biscuit tin can have holes punched through, be placed over a low flame and used to hot smoke small cuts or fish, such as trout or eel. A 44 gallon drum can be converted to a fire box by cutting holes near the base to let in air, then drilling smaller holes near the top to insert metal hanging rods. You can dodgy up a makeshift cold smoker using plywood to form a box, placing it on a raised platform, and having a separate fire pit with a metal flue to draw up the smoke into the box. Some people use old fridges as the smoker, or old cookers. All you need is a fairly enclosed space with some room for the smoke to draw out the top, and a place where you can have a small fire going that won’t set the food (or the smoker!) alight. We’ve used little gas flames under metal tins, kettle-style barbecues for large cuts, and a loose structure of old bricks for smoking fish.

HOT SMOKING

The most difficult smoking to get right is actually hot smoking, because the heat of the fire can adversely affect the end result, so you’re trying to balance the need for some heat, and some smoke, with the need to not create too much heat or smoke at any one time. The smoke comes straight from a fire and is captured under an enclosed lid and the food cooks as it smokes.

The down side of hot versus cold smoking is that the fat in hot smoked food can go rancid quicker than cold smoked meats. It also changes the texture of the meat, so it isn’t always desirable for fish or other delicate textures. Despite its name, hot smoked food is ideally cooked at or around 100°C (200°F), so it’s not particularly hot when compared to an oven. Hot smoked food should reach an internal temperature of at least 72°C (162°F) but work on 80°C (176°F) for safe home smoking.

In the old days people often smoked their bacon in the chimney above their fire. Hot smoking is perfect for ham, because it needs to be cooked at some point anyway. It also works really well for other ingredients that either benefit from their cooked texture, or aren’t going to be cooked another time and need to be cooked before being eaten.

COLD SMOKING

Cold smoking, as the name suggests, means that smoke is cooled before it surrounds the food. This method doesn’t cook the ingredient at all, and sometimes (as in bacon) the cooking will happen later. Some things, such as smoked fish, can be eaten raw. Cold smoking is more complicated to do at home because you need to have the food separated from the fire, either by distance or a pipe. Cold smoking is ideally done at temperatures around about 20°C (68°F), but can be done at higher temperatures if not done for too long at a time.

Cold-smoked products are generally subtler. Most salmon is cold smoked, hence the fine slivers and slippery texture. You can cold smoke food using less smoke for longer, which means you can control the smoke better. That said, to build a cold smoker takes more effort. A fire pit connected by a pipe to an old fridge or metal drum can work a treat. The idea is that the pipe is long enough to cool the smoke to a reasonably low level. Remember to leave some air holes at the top of your smoker to help draw the smoke up out of the fire, and often it’s better to use subtler styles of wood.