Peel and finely chop the onion. Pick the sauerkraut. Heat oil in a pot and sauté onions. Add the sauerkraut and also fry briefly. Add tomato paste and stir in. Add cumin and caraway seeds.
Add stock, bring to the boil and simmer for about 10 minutes. Cut the sausages into thin slices. Add to the soup about 2 minutes before the end of the cooking time. Season soup with salt, pepper and paprika. Wash parsley, dab dry and chop finely. Serve the soup in deep plates sprinkled with parsley