The Barrelsmith Boulevardier is a 750 ml bottle of pre-mixed cocktail made with bourbon, sweet vermouth, and Campari. The Boulevardier is a classic cocktail that has been around since the 1920s and is a favorite of many cocktail enthusiasts. The Barrelsmith Boulevardier is made with high-quality ingredients and is a great way to enjoy a classic cocktail without having to mix it yourself.