Cook potatoes, peel and still warm grate grater. The feta cheese too. Mix well. To the resulting mixture, strained yogurt, chopped parsley and feathers onion, spices and mix well again. Allow to stand for one hour. Eggs are broken. From the mixture form balls that are dipped in egg, rolled in breadcrumbs and again in the egg. Meatballs are fried until golden in a pan with heated sunflower oil (the oil should cover them) and drained on paper.