Citrus liqueur, often made by infusing citrus fruits like lemons, oranges, or limes with alcohol and sugar, is a versatile ingredient in the world of cocktails. It brings a burst of bright, tangy flavors that can complement or enhance other elements in a drink. Common examples include triple sec, which is an orange-flavored liqueur, and limoncello, a lemon-flavored liqueur. These liqueurs are known for their ability to add depth and complexity to a wide range of cocktails, from the classic Margarita to the sophisticated Cosmopolitan.

When used in cocktails, citrus liqueur can serve multiple roles. It can act as a primary flavoring agent, providing a zesty kick, or as a balancing component that harmonizes the sweetness and acidity in the drink. The high sugar content in many citrus liqueurs also adds a smooth, rich texture to cocktails. Whether you're looking to create a refreshing summer beverage or a cozy winter concoction, citrus liqueur offers a bright, versatile option that can elevate your mixology game.