A traditional spirit of Mexico, mezcal is known for its centuries of rich history and distinct set of artisanal techniques that have been passed down for generations. But recently, the once-local spirit has seen an astronomic boom in popularity in the U.S., going from a niche pursuit to a widely used cocktail ingredient. The spirit even found its way into beloved modern classics like the Naked and Famous, Division Bell, and Oaxaca Old Fashioned. Though mezcal’s newfound fame is great for fa...