If you love bourbon, love Negronis, or both, you need to make a Boulevardier. The Boulevardier is classic cocktail that's basically a Negroni with bourbon instead of gin. The Boulevardier is more full bodied and nuanced than your typical Negroni since bourbon has a more delicate flavor than gin. Use a high proof Bourbon in this drink to really help it shine and stand up to the Campari.