Ingredients: 1/2 cup ice cubes 5 mint leaves 2 slices lime 1 tablespoon elderflower syrup (or more to taste) 1/2 cup Prosecco or white sparkling wine 1 splash sparkling water Optional additions: 1/4 cup chopped cucumber 1/4 cup fresh raspberries or strawberries 1/4 teaspoon honey o…