Opera Cocktail Recipe Posted on August 24, 2019August 24, 2007 by admin Ingredients 1/2 oz Dubonnet French vermouth1 1/2 oz gin1 tbsp maraschino liqueur Stir all ingredients with ice, strain into a cocktail glass, and serve. Spread the love Related posts: Vernal Equinox Recipe Annabelle Special Recipe Summer Cooler Recipe Bomb Cocktail Recipe