Many liqueurs can be made easily at home by mixing a flavor ingredient, such a fruit, herb or extract, with sugar and alcohol. Some simple and effective liqueur recipes can be found on DrinksMixer and Homemade-Liqueurs.
Creme de Menthe, a popular mint-flavoured liqueur, can be made at home with sugar, water, alcohol and peppermint extract. Homemade-Liqueurs' recipe calls for 1 cup of water, 2 cups of sugar, 3 cups of vodka and 2 to 3 teaspoons of peppermint extract. DrinksMixer recommends using pure grain alcohol instead of vodka. The sugar and water are heated together to make a simple syrup, then all the ingredients are combined and left in a sealed bottle to ripen for one month.
A version of Kalhua coffee liqueur can also be made at home. A simple syrup is made from 4 cups of sugar, 3 1/2 cups of water and a vanilla bean. Next, 3/4 cup of dry instant coffee is combined with 1/4 cup of hot water, then mixed with the syrup. Once the mixture is cool, 4 cups of brandy and 2 tablespoons of pure vanilla extract are added. This mixture also must be aged for a month.
Cream-based liqueurs, such as Irish Cream, can be made without aging. Simply combine 1 cup of cream, 1 cup of condensed milk, three eggs, 1 tablespoon of chocolate syrup and 1 cup of rye whiskey, and serve.