Pucker Up Baby LEMON CURD Lemon Curd... It's a dessert topping or spread. It's often confused with a custard or pudding. But the difference is Pucker up indeed. This is a ye olde timey dish. Think 18th 19th century formal British Teas and you probably found a curd. Spread on a toast point or as a filling for tiny tea cakes, you just can't match that intense flavor.