3 (3-inch) sprigs fresh mint, leaves removed
1 1/2 oz. white rum
1/2 oz. lime juice
1/2 oz. peach liqueur
1/4 oz. simple syrup
3 oz. sparkling wine, Prosecco, Cava or Champagne
1. Reserve 1 mint leaf for garnish; place remaining leaves in cocktail shaker. Add all remaining ingredients, except sparkling wine. Fill cocktail shaker with ice; shake well.
2. Strain into coupe or wine glass; top with sparkling wine. Rub reserved mint leaf between fingers to release aromas; float mint leaf on the surface.