Yogurt and mayonnaise mix. All products are grated. Arrange the salad in a bowl starting with the potatoes, which are covered with mayonnaise mixture, then put cheese, ham, eggs, feta cheese. Subsequent layers are made in the same way, starting with potatoes and only they are covered with mayonnaise mixture. There are also such lines until the end products - the quantity is optional. The amount of mayonnaise should be twice the yogurt.