Cordials and crèmes are infusions that generally contain a smaller amount of alcohol (17–30 percent) and are sweeter, due to the addition of simple syrup or other sweeteners. When making liqueurs, many find it is best to use as neutral a palette as possible. Although not available in all states, the best choice for a neutral alcoholic base is high-proof grain alcohol.
If pure grain alcohol is not available in your state, the next best choice is non-flavored vodka. In the United States, all non-flavored vodka is legally required to be odorless, colorless, and tasteless, but that’s not to say equal. Choose a quality vodka wisely. If you’re interested in showcasing the fresh purity of your ingredients, this is the best choice. Although not as widely used, other choices for your alcoholic base are brandy, rum, whiskey, and gin.
After you have chosen your alcoholic base, choose your fruits, nuts, herbs, spices, or flavored extracts.
Although most cordials and crèmes are made with simple syrup (made from sucrose or table sugar), there are other options to consider based on your desired outcome. Some other options include: honey, brown sugar, or corn syrup, all of which have a distinctive flavor. As with any ingredient substitute, know that it will affect the taste of your end result.