Wash the potatoes and cook in boiling water for about 20 minutes. Drain potatoes, rinse with cold water and peel. Let them cool down. In the meantime, wash, clean, cut the tomatoes into eighths and cut them into pieces.
Cook the peas in boiling salted water for about 3 minutes. Drain, rinse with cold water, drain. Wash and clean the salad and cut into strips. Drain the corn. Mix salad cream, yoghurt and vinegar.
Season to taste with salt, pepper and sugar. Cut the potatoes into slices and mix with the prepared ingredients and the salad dressing. Season to taste with salt and pepper. Rinse cutlets, dab dry well, season with salt and pepper.
Whisk the egg in a deep dish. Crumble the crisps coarsely, also put them in a deep plate. Turn the schnitzel first in the egg, then in the chip crumbs, press well. Heat oil in a pan. Fry the escalopes on both sides for approx. 4 minutes on both sides over a low heat.
Serve schnitzel with salad and garnish with parsley.