Going Out West

Add the rye whiskey, mezcal, amaro, simple syrup, and aromatic bitters to a mixing glass.

Fill the mixing glass with a generous amount of ice and stir until well-chilled.

Strain the mixture into an Old Fashioned glass over a large ice cube.

Express the oils from an orange peel by squeezing it over the drink and then drop the peel into the glass as a garnish.