A genuine chocolate-and-cocktail tasting tucked behind an EaDo retail shop — founder Casey McNeil, a Swiss-trained chocolatier, makes his own couverture from directly-sourced cacao rather than buying it in, which sets the whole thing apart from a themed bar. The roughly 45-minute guided sessions in the 22-seat hidden room pair spirit-filled chocolates with cocktails, by reservation only. Of Houston's hidden-door concepts, this is one of the few where the substance matches the secrecy. Come for a craft-chocolate tasting that earns the reservation.