Ingredients
1 cup sugar1 cup water1/2 cup sliced fresh gingerroot1/2 teaspoon whole peppercorns1/4 teaspoon vanilla extract1/8 teaspoon salt1/4 cup coarse sugar3 cups fresh grapefruit juice, chilledIce cubes4 cups sparkling water, chilled
Preparation
In a small saucepan, bring the first six ingredients to a boil. Reduce heat; simmer 10 minutes. Refrigerate until cold. Strain syrup, discarding ginger and peppercorns.
Using water, moisten rims of eight cocktail glasses. Sprinkle coarse sugar on a plate; hold each glass upside down and dip rims into sugar. Discard remaining sugar on plate.
In a pitcher, combine grapefruit juice and syrup. Pour 1/2 cup into prepared glasses over ice; top with 1/2 cup sparkling water.
