To make the best kir royale, chill your sparkling wine very well. Placing the flute glasses into the freezer a few minutes before making them isn’t a bad idea either.
1/2 ounce (1 tablespoon) crème de cassis, crème de framboise or Chambord, or more to taste
1 (750ml) bottle dry champagne or sparkling wine, chilled
1/4 cup fresh raspberries, optional
Add crème de cassis to each flute.
Drop in 3 to 4 raspberries.
Fill each flute with champagne. Serve immediately.