Peel the potatoes and boil in salted and acidified with vinegar water. Eggs also boil. Four of boiled eggs, the feta cheese, cheese, pickles and potatoes are grated. With half the grated potatoes covered the bottom of the baking tray, so as to obtain a base (need to use a pan with removable bottom). Cover with half of the mayonnaise, sprinkle with half of the grated feta cheese, then of cheese, pickles and eggs. Similarly, a second line, as it ends with the grated cheese. The remaining eggs are cut into thin strips and with carrot slices, pickles and olives (pitted) decorate the cake in the shape of a watch. Before you consume should stand in refrigerator at least 3 hours.