G4 Aejo is a highlands tequila from Felipe Camarena’s El Pandillo distillery in Jess Mara, aged a minimum of 18 months in American oak barrels that once held bourbon. The tequila is verified additive-free, and the house cuts its distillate with a 50/50 blend of rainwater and natural spring water one reason the agave stays so present under the oak. Stone-oven-cooked agave meets a handmade tahona here, and the result drinks with cooked agave and vanilla up front, mild black pepper behind it, and a slightly dry finish. The barrel rounds the edges without burying the plant. Pour it neat after dinner, or hand it to a bourbon drinker ready to cross over.