Cut the 8 sausages diagonally into slices, fry on all sides in a coated pan, remove. Steam the diced onions and potatoes in the frying fat for 10 minutes, possibly add a little clarified butter.
Only when the potatoes are done add the can of sauerkraut. Deglaze everything with the cream and / or milk, add 1 tablespoon of mustard, salt, pepper, sweeten to taste.