The stone sour is a classic cocktail from the pages of dale degroffs the craft of the cocktail. Its a smoother, sweeter take on a whiskey sour. Degroff is known for his sweet tooth, so weve scaled back the simple just a bit from his recipe. If youve got a batch of homemade lemon syrup or oleo saccharum, try it out here the stone sour is a great place to use a citrus-infused syrup for an even brighter, richer flavor.