Sauerkraut soup

Heat the oil in a pan and sauté the onion until soft. Add the cabbage and fry while stirring. Add the flour and fry for 2-3 minutes more. Remove the pan from the stove and add the paprika. Add 300 ml water and stir until smooth and free of lumps. Add 800 ml water and cook for 15-20 minutes on low heat with the lid on. Next, add the sausage slices and bay leaves and cook until the cabbage is soft. Add 200 ml soup to the sour cream, mix it, pour it into the soup and let it boil. Add pepper and salt to taste, as well as a pinch of sugar if you like.