Place 2 cups of ice cubes in a large shaker. Pour in the Lillet and half of the seltzer water and shake it well until it's frothy (about 30 seconds). Fill two wine glasses with the remaining ice, split, then strain the liquid into the glasses and garnish them both with a slice of lime and a sprig of basil.
Serving: 1glass | Calories: 40kcal | Carbohydrates: 3g