Clean, wash and cut the leek into rings. Peel garlic and chop finely. Knead dumpling dough and egg yolk. Spread on a greased fat pan (approx. 32 x 39 cm; at least 3.5 cm deep), pulling up slightly at the edges. Bake in a preheated oven (electric: 200 °C/circulating air: 175 °C/gas: level 3) on the lowest shelf (gas: see oven manufacturer) for approx. 30 minutes.
Heat the oil in portions in a large frying pan or wide pot. Fry the minced meat and minced pork in it in portions until crumbly. Fry the garlic briefly. Season with pepper and a little salt and remove. Steam the leek in the frying fat for about 5 minutes. Season with salt, pepper, nutmeg and 1 pinch of sugar
Admit hack again. Dust with flour and sweat briefly. Stir in 3/8 l water, cream and processed cheese in flakes. Bring everything to the boil and simmer for about 5 minutes while stirring
Sprinkle the dough evenly with breadcrumbs. Season the leek mince mixture to taste and spread on top. Sprinkle with cheese and bake at the same temperature for another 30 minutes until golden brown
Drink: cold beer