Cocktail bitters from Fee Brothers, a five-generation Rochester, New York family business dating to 1864one of only two American bitters producers to survive Prohibition. Jack Fee spent years in the 1950s redeveloping lost recipes from sparse clues. The Aztec Chocolate expression combines deep cocoa with cinnamon and a pop of chili heat. A few dashes transform an Old Fashioned or add depth to any chocolate-adjacent cocktail.