Applejack Base is a type of alcoholic beverage made from hard CIDER. It is made by fermenting apples and then distilling the resulting CIDER to create a strong, flavorful drink. Applejack Base is often used as a base for other drinks, such as cocktails, and can also be enjoyed on its own. CIDER is a popular choice for making Applejack Base, as it provides a sweet, fruity flavor that pairs well with the strong alcohol content.