Ingredients
1 tablespoon Campari
1/4 cup freshly squeezed red-grapefruit juice
6 tablespoons tonic water
1 red grapefruit slice, for garnish
Preparation
Fill a tumbler with ice. Shake Campari, grapefruit juice, and tonic in a cocktail shaker. Pour into tumbler, and garnish with the grapefruit slice.
