Crème de cassis is a sweet, dark liqueur made from blackcurrants. Originating in France, it is often used in cocktails and as a flavoring in desserts. The liqueur has a rich, fruity taste and a deep purple color, making it a popular choice for mixing with other beverages. One of the most famous cocktails featuring crème de cassis is the Kir, which combines the liqueur with white wine. It can also be enjoyed in a Kir Royale, where it is mixed with champagne. Crème de cassis is typically served chilled and can enhance various drinks and dishes.