Cook potatoes with skin in boiling water for 20-25 minutes. Then drain, rinse and peel. Leave to cool a little.
Onions peel, finely dice. Dice the bacon and fry it crisply in a large pan without fat. Add onions shortly before the end and fry briefly. Remove. Cut potatoes into slices. Heat 3 tablespoons of clarified butter in 2 portions in the pan.
Fry the potatoes in it in 2 portions, turning them golden brown. Season with salt and pepper.
Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Mix potatoes and bacon mix. Pour into a greased round tart or a flat casserole dish (26 cm Ø; 3.5 cm high).
Whisk eggs and cream. Season with salt, pepper and nutmeg and pour over the potatoes. Bake in a hot oven for 35-40 minutes.
For the dip, mix sour cream and mustard. Season to taste with salt, pepper and sugar. Finely dice the cucumbers. Wash parsley, shake dry, chop.
Wash the schnitzel and dab dry. Mix flour, salt and pepper on a flat plate. Turn the schnitzel in it, dab off excess flour. Heat 3 tablespoons of clarified butter in 2 portions in a pan.
Fry the escalopes in it in portions on each side for about 2 minutes. Serve everything. Sprinkle with parsley and cucumber, possibly eat cucumber with it.