Wash the potatoes thoroughly, place them in a pot with water, bring to the boil, cover and cook for about 20 minutes. In the meantime peel and finely dice the onions. Heat the fat in a pot and fry the onions until transparent. Sprinkle with flour and sweat. Stir in 3/4 litres of water, cream and stock.
Bring to the boil while stirring and simmer for about 5 minutes. Stir in 50 g cheese and melt. Season to taste with salt, pepper and sugar. Remove from the stove. Drain the potatoes, rinse and rinse off the skin and cut into slices. Cut Landjäger into slices. Mix the potatoes and 3/4 of the Landjäger, put them into a large (or two smaller) greased ovenproof dish. Pour the sauce evenly over it. Sprinkle the rest of the Landjäger over it. Sprinkle with 50 g cheese.
Cut Landjäger into slices. Mix the potatoes and 3/4 of the Landjäger, put them into a large (or two smaller) greased ovenproof dish. Pour the sauce evenly over it. Sprinkle the rest of the Landjäger over it. Sprinkle with 50 g cheese. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 20 minutes. Remove from the oven and serve garnished with marjoram
With 12 people: