Coffee liqueur is a sweet alcoholic beverage that combines the rich flavors of coffee with spirits, typically vodka or rum. It is often made by infusing brewed coffee with sugar and alcohol, resulting in a smooth, dark liquid that can be enjoyed on its own or used in cocktails. Popular brands of coffee liqueur include Kahlúa and Tia Maria. These liqueurs are commonly used in various drinks, such as White Russians and Espresso Martinis, and can also be drizzled over desserts or added to coffee for an extra kick.