The Black Russian is a classic cocktail made with just two ingredients: vodka and coffee liqueur, typically Kahlúa. It is served over ice in an old-fashioned glass and is known for its rich, dark flavor profile that combines the smoothness of vodka with the sweetness of coffee liqueur. This drink originated in the late 1940s and is believed to have been created in Belgium by a bartender named Gustave Tops. The name reflects its dark color and the use of vodka, which is often associated with Russia. The Black Russian is a simple yet sophisticated choice for coffee lovers.