Ingredients
1/2 cup sugar
3 strips pink-grapefruit zest (each 2 inches long and 1 inch wide), plus 1 1/2 cups fresh juice, chilled (from 2 to 3)
3 fresh bay leaves, plus more for serving
1 cup vodka, chilled
1 cup Cointreau or other orange liqueur, chilled
1 1/2 cups white cranberry juice, such as Ocean Spray, chilled
Large ice cubes, for serving
1 bottle (750 milliliters) prosecco brut or other dry sparkling white wine, chilled
24 ounces club soda, chilled
Sliced kumquats, for serving (optional)
Preparation
In a small saucepan, bring sugar, grapefruit zest, bay leaves, and 1/2 cup water to a boil, stirring until sugar has dissolved. Let cool completely, about 1 hour. Strain, discarding solids, and refrigerate in an airtight container until cold, at least 1 hour and up to 1 week.
In a punch bowl or large pitcher, stir together syrup, grapefruit juice, vodka, Cointreau, and cranberry juice. If not serving right away, cover and refrigerate up to 1 day.
Add ice, top with prosecco and club soda, and garnish with bay leaves and kumquats. Serve immediately.
