- 2 cups fresh grapefruit juice (from 2 to 3 grapefruit)
- 1/2 cup Grand Marnier
- 1 1/3 cups sparkling water
- Garnish: orange slices; lime wedges; maraschino cherries
- Fill 4 (12-ounce) glasses halfway with ice. Add 1/2 cup grapefruit juice, 2 tablespoons Grand Marnier, and a pinch of salt to each glass and stir. Top off each drink with 1/3 cup sparkling water and stir.