Peel and wash the potatoes and cut into large cubes. Peel and finely dice the onion. Clean, wash and cut the savoy cabbage into pieces. Heat clarified butter in a frying pan. Fry the potatoes and onion for about 10 minutes while turning.
Add the savoy cabbage and fry for 3-4 minutes. Season with salt, pepper, paprika and thyme. Add tomatoes and 750 ml water, bring to the boil and braise for about 15 minutes. Cut the sausages into thick slices.
Heat the oil in a frying pan. Fry the sausages all around. Add to the potatoes 5 minutes before the end of the cooking time. Season goulash to taste again. Arrange in a bowl and sprinkle with thyme.