MX Wines are made by Margaux Singleton, who is also the owner of the legendary Enoteca Wine Shop in Calistoga. Using grapes sourced from premier California vineyards, Singleton makes very small quantities of Cabernet Sauvignon and Zinfandel, which generally sell out immediately. The tagline for her MX Wines label is “one girl and some grapes.” These are artisanal wines in every way.