Wash the potatoes and cook in boiling water for 15-20 minutes. In the meantime, clean and wash the spring onions and cut them into small pieces. Coarsely chop the walnuts. Wash the meat and dab dry. Rinse potatoes cold, peel them and cut them in half lengthwise. Heat clarified butter in a pan.
Fry medallions in it from both sides for about 3 minutes. Fry the potatoes and spring onions for about 5 minutes while turning. Season everything with coarse pepper and salt. Sprinkle with chopped walnuts and serve sprinkled with walnut oil. Garnish with parsley