Limoncello is a strong, sweet, and very lemony dessert liqueur or digestif. Homemade limoncello is made with 4 simple ingredients, pure grain alcohol, lemons, sugar, and water. Peeling the lemons is the most critical aspect for this recipe. You want the thinnest lemon peel you can possibly get, leaving as much of the pith on the lemon as possible (the white part). Too much pith and the limoncello will be bitter.
Limoncello is usually sipped after dinner as a digestif in a very small glass or tall shot glass. It’s served in 1-2 ounce portions and is best served very cold.