In Albania, Bulgaria, the former Yugoslavia, and Romania, potatoes are used instead of eggplant, pork or beef mince, and the top layer is usually milk or yogurt mixed with raw eggs, sometimes with a small amount of flour added. There is also a three-layer version: the bottom layer consists of ground pork and beef, the middle layer of potato slices, and the top layer is typically a custard. Each layer is cooked on its own and layered in a pan and baked until the top is browned.