For this muddled-grape cocktail, Karen Fu evokes the flavors of a late-harvest Riesling by combining dry Riesling with elderflower liqueur.
Slideshow: Aperitif Recipes
Recipe from Food & Wine Cocktails 2015
In a cocktail shaker, muddle the grapes with the Simple Syrup. Add the Riesling, St-Germain, lemon juice and ice. Shake well and fine-strain into a chilled flute. Top with the Champagne.