Combine in mixing glass over ice, stir for 30 secs, strain into coupe. Cherry (either freshly pitted or marinated in maraschino) is optional.
Awesome showcase for homemade cherry shrub (base made with 16 oz each demarara sugar, rice vinegar & cider vinegar over 32oz pitted cherries). Assertive mezcal smoke & tangy funk on sip, rich cherry with chocolate touch on swallow, long bitter cherry finish. And it's a jewel-like ruby red drink, Boston Red Sox would be pleased.
Adapted from Michael (Mr. Manhattan) Lazar's experiment with cherry shrub and a resulting mezcal cocktail.
Michael Lazar's "Stirred, Not Shaken" blog http://bit.ly/mAEWxC