1. Place sour cabbage and broth in a large pot.
2. Bring to a boil over medium high heat. Add bay leaf, caraway seeds, and allspice.
3. If your cabbage has been fermenting for a while, you only need to bring it to a boil before moving on with the recipe. If your sauerkraut hasn't been fermenting for very long (or if using and is still pretty crunchy, you will want to boil it for about 30mins to soften it up.
4. Add diced onion to a heated frying pan with oil or lard. Fry for a few minutes, then add the sausage. Fry for a few more minutes.
5. Sprinkle with flour while stirring to create 'roux' - a paste-like substance.
6. Finally, sprinkle with sweet paprika. Mix thoroughly and let cool off.
7. When cool, add this mixture to your soup pot. Stir thoroughly, and add a dash of salt and pepper to taste.
Serve with fresh bread and a dollop of sour cream.