There is a custard-like European liqueur named “Advocaat,” but you won’t find any in this edible cocktail. Edible? Yes, the Dutch version is eaten with a spoon. Bartender Tiffany Soles of Irvin Mayfield’s Jazz Playhouse dug around on the internet for recipes and used whole eggs to achieve the thickness needed. “Traditionally, it’s made with brandy,” says Soles, “but I think that a number of spirits like CatDaddy Moonshine or Laird's Applejack would also be delicious."