2 cups fresh pink grapefruit juice (from 2-3 grapefruits)
1/2 cup St-Germain
1/4 cup Campari
1 750-ml. bottle chilled sparkling wine
Combine grapefruit juice, St-Germain, and Campari in a large pitcher. Cover and chill until cold, about 2 hours.
Divide grapefruit mixture among glasses and top off with sparkling wine.
Bon Appetit, May 2013