Use a vegetable peeler to cut wide strips of orange zest. Be sure to get just the orange part and none of the bitter white pith.
In a cocktail shaker, pour the bourbon, Campari and sweet vermouth over ice. Stir to chill, then pour through a strainer into a coupe glass.
Garnish with the orange zest and serve.
Notes
Generally, a Boulevardier is equal parts of each liquor. However, many bartenders adjust the ratios to make the bourbon more prominent. You can certainly do that, add ½ ounce extra bourbon and ¼ ounce less of the other two.
This drink can be served on the rocks, if you prefer.
See the post above for suggestions on which brand of bourbon to use and answers to more FAQs.
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