Key Lime Liqueur is a citrus-flavored alcoholic beverage that captures the tart and tangy essence of key limes. This liqueur typically combines the sharpness of key lime juice with a sweetened alcohol base, resulting in a balanced yet zesty flavor profile. It is often clear or pale green in color, reflecting its fresh and vibrant taste. Key Lime Liqueur can be used as a standalone ingredient in various cocktails or as a flavor enhancer in mixed drinks, adding a unique twist to traditional recipes.

In the context of cocktails, Key Lime Liqueur is particularly versatile. It can replace or complement other citrus liqueurs such as Triple Sec or Limoncello, offering a distinctive key lime flavor. Popular cocktails that feature this ingredient include the Key Lime Martini, where it is mixed with vodka and cream, or the Key Lime Mojito, which pairs it with rum and fresh mint. Its sweet and sour notes also make it an excellent addition to tropical drinks, providing a refreshing contrast to sweeter ingredients like coconut cream or pineapple juice.