For another two-person cocktail, pour 2 tablespoons grenadine syrup into the glasses with the juice of 1/2 lemon and the juice of 1/2 orange. Add 6 crushed mint leaves, 2 3/4 ounces of rum, some sparkling water and the seeds of 1/2 pomegranate. Finish with sparkling water and garnish with a slice of orange peel.