Boiled potatoes mixed with parsley. Add salt and pepper. Half was poured into a greased and sprinkled bread crumbs cake pan, top rank hard-boiled eggs. Pour over them make the mixture. It becomes a roll. Pour in the butter, sprinkle with breadcrumbs and bake until browned. already tepid roll cut into slices and pour the following sauce: in 1 tbsp butter fry flour. Add yogurt and about 1 cup water. Prepare not very thick sauce. Add salt and lemon juice. Flooded roll sauce sprinkled with chopped parsley.