Soak buns in beer. Peel and chop the onion. Mett, mince, eggs, squeezed out rolls, mustard and half onion knead, season. Put them on a fat pan (32 x 39 cm) sprinkled with breadcrumbs and press them down. Pre-bake in a hot oven (electric cooker: 175 °C/ convection oven: 150 °C/gas: level 2) for approx. 25 minutes
Dice the bacon and drain in hot oil. Fry the rest of the onion. Clean, wash and chop the peppers. Squeeze the sauerkraut. Add both, braise for about 12 minutes. Season with salt, pepper and paprika
Spread the cabbage mixture on the mince. Grate cheese. Mix with sour cream, season. Pour on the cabbage and bake at the same temperature for another 20-25 minutes