Peel onions and cut them into strips. Wash the meat, dab dry and cut into thin cubes. Heat the lard in a roaster. Brown the meat, season with pepper and caraway seeds. Add onion and fry over medium heat until translucent.
Add tomato paste and briefly sauté. Dust with flour and stir in. Deglaze with broth, add bay leaf and braise covered at low heat for about 30 minutes. Stir from time to time. Clean, wash and dice the pepper. Drain the sauerkraut. Add both to the goulash. Add some more stock as needed, so that the ingredients are covered. Cover and stew for about 15 minutes. Season to taste.
Add both to the goulash. Add some more stock as needed, so that the ingredients are covered. Cover and stew for about 15 minutes. Season to taste. Arrange the goulash on plates. Put a blob of sour cream on each plate and dust with paprika. Potato rösti taste good with it.