Rinse and drain the sauerkraut. Place sauerkraut in large 4-quart casserole. Add 2 quarts hot water. Add uncooked spareribs, paprika, bouillon cubes, caraway seeds, and pepper. Cook covered, over low heat, 3 to 4 hours.
Fry floured bacon slices. Break bacon into sauerkraut. Remove bones from the sauce before serving. Serve with dark bread and steins of beer.