Enzoni

Muddle the grapes thoroughly in the base of a shaker.

Add the gin, Campari, freshly squeezed lemon juice, and simple syrup to the shaker.

Shake the mixture vigorously to combine all the flavors.

Double strain the cocktail into an Old Fashioned Glass to ensure a smooth texture.

Garnish with a few green grapes threaded onto a cocktail pick, resting it elegantly across the rim.