Boil the potatoes (I brew potatoes peeled and diced - are cooked faster), mash them with the butter, the cream cheese and a bit of mayonnaise. Shaped cake tightly arrange slices of black bread (as in black bread, the better), top coat them with mayonnaise (maybe something else spreads such as cream cheese). Spread mixture over potato slices, redistribute it evenly and lightly pressed is well glued with slices. Top spreads a thin layer of mayonnaise, decorate with processed cheese and shredded cheese. With olives and the lukanka decorate to your taste.