Onions cleaned, cut into in small pieces and stew. Sauerkraut cut into thin strips, squeezed of juice, add to the onions and stew for about 5 minutes. Sprinkle with pepper and cumin. Ham slices are coated with mustard, put the green and rolled into rolls. In a greased baking dish tightly stacked rolls. From top rank slices feta cheese and pour the beer. Bake in preheated oven at 200 ° C until golden. Sprinkle with paprika before presentation.