Kir Royale is a classic French cocktail made by mixing Crème de Cassis, a sweet blackcurrant liqueur, with Champagne. It is typically served in a flute glass, making it a popular choice for celebrations and special occasions. The drink is known for its vibrant color and refreshing taste. To prepare a Kir Royale, a small amount of Crème de Cassis is poured into the glass, followed by the addition of chilled Champagne. The proportions can vary, but a common ratio is one part liqueur to five parts Champagne. This delightful drink is often enjoyed as an aperitif before meals.