Clean and wash the leek and cut it into slanted rings. Peel and finely chop the onion. Heat 2 tablespoons of fat in a large frying pan. Fry half of the onion in it until transparent. Steam the leek for about 10 minutes
Sprinkle flour over it, sweat briefly. Stir in 1/8 l water, milk, stock and marjoram. Bring to the boil and simmer for about 5 minutes. Season to taste and pour into a greased casserole dish (approx. 30 cm long)
Knead the ground pork, the rest of the onion and mustard. Season with pepper. Form 6 small rolls from it. Place on 1 slice of ham and roll up. Place on the leek vegetables and grate cheese over them. Bake in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for 25-30 minutes, garnish. Serve with mashed potatoes
Drink: beer or spritzer