Wash the potatoes thoroughly and cook them in boiling water for about 20 minutes. Clean, quarter and wash the savoy cabbage. Cut out the stalk. Cut savoy cabbage into strips and blanch in boiling salted water for 1-2 minutes.
Pour off, rinse with cold water. Peel and chop onion. Drain the potatoes, rinse with cold water and peel. Press potatoes through a potato ricer. Let cool down a little. Knead in eggs, 75 g diced ham, diced onion, 50 g flour and quark.
Season with salt, pepper and nutmeg. Form approx. 8 meatballs from the mixture. Heat 1 tablespoon of oil and fry the savoy cabbage briefly. Sprinkle with 1 tablespoon of flour and sauté briefly. Add 150 ml water and milk and simmer for about 5 minutes.
Heat 1-2 tablespoons of oil in a coated pan. Fry the meatballs in it at medium heat on each side for 3-4 minutes. In the last minute of the frying time, add 25 g ham cubes and fry them as well.
Wash parsley, dab dry and chop. Season savoy cabbage with salt and pepper. Sprinkle parsley over it. Arrange the potato meatballs on the savoy cabbage. Spread the diced ham on top.