Onions peel, halve and cut into slices. Heat the oil in a pot. Add the onions and fry them for about 10 minutes while turning them several times.
Dust the onions with flour and sauté while stirring. Deglaze with a good 3/4 l water. Bring to the boil, stir in stock. Simmer covered at low heat for about 10 minutes.
Cut the sausage into slices. Add cheese to the soup. Simmer while stirring until the cheese has melted. Season soup with salt, pepper, caraway seeds and wine. Wash, chop and sprinkle parsley over the soup. Pretzels fit to this
-Other sausages are also suitable as soup ingredients, e.g. Wiener, Krakauer or diced Mettwurst leftovers
-Instead of normal onions, the soup can also be made with vegetable onions. They are slightly milder