Prep the serving glass. Lightly run the orange twist around the rim of the glass. Add a large ice cube or two small cubes to the glass (or you can skip the ice and use a chilled glass instead).

Mix. Combine the bourbon, Campari and sweet vermouth in a separate cocktail mixing glass with a handful of ice. Stir vigorously for 20 seconds or until the mixture is completely chilled.

Strain and serve. Strain into the serving glass. Garnish with the orange twist, serve and enjoy!