Stir with ice, strain into a cocktail coupe, and garnish with a lemon twist.
For a less sweet drink, decrease the Benedictine to 1/4 oz or perhaps decrease both liqueurs to 3/8 oz. And increase the mezcal to 3/4 oz.
In thinking about gentian cocktails that I had recently made at Drink, I noted that gentian liqueur pairs well both with mezcal and with Benedictine. The 3:1 rye whiskey to mezcal base spirit is one that I have grown to appreciate through the years especially in Death & Co. recipes. Assembling all the components, I dubbed this one the Vaquero meaning cowboy. Folks looking for drier drinks should see the note.