Grape juice is a rare ingredient in cocktails, but we’d love to see more of it. Concord grape is common for juice, and it has a deep jelly flavor that holds its own splendidly well against spirits.
Case in point: the Polynesian Spell, a 1960s tiki classic by Sandro Conti of the Kahiki in Columbus Ohio, almost lost to time before it was rediscovered by cocktail historian Jeff “Beachbum” Berry.
The combination of grape, orange, and peach gives it a gummy-bear quality that makes it eminently drinkable. Concord, or at least red, grape juice is ideal, but white grape juice should make a similarly affable drink.