Peel and finely chop the onion. Cut the sausage diagonally into slices. Clean, wash and cut the bell peppers into strips. Heat oil in a large pot and fry sausage. Add onion and fry until transparent.
Sprinkle with paprika powder and sauté briefly. Add sauerkraut and paprika, pour on broth. Cover and simmer for about 10 minutes. Clean, wash and cut spring onions into rings. Wash marjoram, dab dry and chop finely.
Add both 5 minutes before the end of the cooking time. Season to taste with salt and pepper. Serve each with a dollop of sour cream.