Add ice, rum, Campari, Savoia Americano Rosso, and Raspberry Shrub to a stirring vessel. Stir 10 times, and strain over a large ice cube in a rocks glass. Express grapefruit peel, and place on ice cube; express lemon peel, and place on grapefruit peel.
Notes
Craig likes Diplomático Reserva Exclusiva rum. If you can’t find Savoia Americano Rosso, an Italian aperitivo made with botanicals and aged Sicilian Marsala wine, you can substitute equal parts Aperol and dry vermouth.
Recipe by Louisiana Cookin' at https://louisianacookin.com/raspberry-negroni/