Combine the vodka, fresh grape juice, Grand Marnier and ice in a cocktail shaker. Shake well and strain into a champagne flute. Top with Prosecco, a few grape slices and serve.
To make fresh grape juice: puree 1 cup seedless red California grapes in a food processor or blender and strain through a fine sieve. It will make about 1/3 cup.
No serving suggestions.
Nutritional analysis per serving: Calories 135; Protein .3 g; Carbohydrate 12 g; Fat .06 g; .37% Calories from Fat; Cholesterol 0 mg; Sodium 3 mg; Fiber .2 g.