A delicious recipe for Opera Cocktail, with Dubonnet® French vermouth, gin and maraschino liqueur. Also lists similar drink recipes. Ingredients:1/2 oz Dubonnet® French vermouth1 1/2 oz gin1 tbsp maraschino liqueur Method:Stir all ingredients with ice, strain into a cocktail glass, and serve. Serve in:Cocktail Glass Nutrition:(per 2.5 oz serving) Calories