Peel and roughly dice the onion. Peel, wash and chop the potatoes. Heat the oil in a large pot. Steam potatoes and onion for about 5 minutes.
Clean the savoy cabbage, quarter it and cut out the stalk. Wash cabbage, cut into strips. Add to the potatoes and
parboil gently
Deglaze everything with about 1 l water and bring to the boil. Stir in stock and simmer covered for about 12 minutes. Rinse and drain the beans. Cut sausage into slices
Heat the beans and sausage in the stew for about 3 minutes. Season to taste with salt and pepper. Arrange savoy cabbage pot in plates. Grate cheese directly over it