The El Camino, A Mezcal and Whiskey Cocktail

In search of the ultimate strong sipper? This mezcal and whiskey cocktail ought to cure what ails you.

1 oz.  mezcal
1 oz. rye whiskey
½ oz. Bénédictine
4 dashes Peychaud’s bitters
Tools: mixing glass, barspoon, strainer
Glass: Old Fashioned
Garnish: orange twist