Peel, wash and roughly dice the potatoes. Cover and cook in salted water for about 15 minutes
Wash the cutlets, dab dry and cut a pocket into each side. Cut cheese into short slices. Fill the schnitzel with the cheese and season. Whisk the egg. Turn the schnitzel first in the flour, then in the egg and finally in the breadcrumbs. Press the breadcrumbs well
Clean the leek, wash it and cut it into rings. Steam in hot fat for about 10 minutes. Season with salt and pepper
Heat the oil in a coated pan. Fry the escalopes for about 6 minutes on each side. In the meantime heat up milk. Drain the potatoes. Add milk and mash finely. Add leek and season to taste. Arrange and garnish everything
Drink: cool rosé wine