Preparation Mix the tequila, mezcal, agave nectar, and bitters in a mixing glass with ice. Strain over a fresh rock in an Old Fashioned glass. Flame an orange peel over the top of the drink, and rest the twist in the glass as a garnish. Excerpted from Mezcal © 2017 by Emma Janzen. Reprinted with permission of Voyageur Press.Buy the full book from Amazon.