"Kir Royal is a French cocktail, a variation on Kir. It consists of crème de cassis (a liqueur made with blackcurrant) topped with champagne, rather than the white wine used in traditional Kir."
2 dashes of crème de cassis
Champagne, to top off
1/4 cup fresh raspberries, optional
Add the crème de cassis to the bottom of a champagne flute and top off with champagne. Stir gently and serve.