For the roast potatoes peel, wash and dice the potatoes. Heat clarified butter in a pan. Fry the potatoes for 20-25 minutes while turning. Season with salt and pepper.
For the meatballs, peel and finely dice the onion. Knead minced meat, egg, breadcrumbs, mustard and onion, season with salt and pepper. Form 12 meatballs from the mixture. Heat 2 tablespoons of oil in a second large pan and fry the meatballs for about 15 minutes.
For the vegetables, peel, wash and slice the carrots. Clean, wash and quarter the pointed cabbage and remove the stalk. Chop the cabbage into small pieces. Heat butter. Sauté the vegetables for about 3 minutes. Dust with flour and sweat a little. Add milk while stirring. Bring to the boil and simmer for about 2 minutes. Season with salt and pepper. Wash and chop parsley. Add to the vegetables. Arrange vegetables, meatballs and roast potatoes.