The agave spirit revolution is coming, as the smoky mezcal variant rightfully becomes more and more familiar to tequila drinkers, leaving room for plenty more curiosity for what's next. "What is next?" is a question best fielded by Travis Nass at the Last Drop Bar at the Hermosa Inn, in Paradise Valley. Here, Nass explores categories of agave spirits previously unknown to anyone even fairly well-versed with the territory, with spirits like sotol, distilled from baked, mature Desert Spoon plants in Chihuahua — essentially, a single-varietal spirit. Try his El Ultimo, which mixes sotol with green chartreuse and Chareau, an aloe vera liqueur.