Brush the potatoes vigorously under cold running water and cook in boiling water for about 20 minutes. In the meantime wash the cutlet, dab dry with kitchen paper and season with salt and pepper. Peel onion and cut into rings. Heat 1 tablespoon of oil in a small coated pan and fry the meat in it on both sides for about 10 minutes at medium heat. Add onion and fry until crispy. Clean, wash and drain the salad and pluck into bite-sized pieces. Wash, clean and quarter the tomatoes.
Season vinegar with salt, pepper and sugar. Beat the remaining oil into it. Turn lettuce and tomatoes in the vinaigrette. Arrange chops with onion rings and some frying fat on a plate. Drain the potatoes, cut them in, press them apart a little, fill them with sour cream and sprinkle them with sprouts and paprika. Put the salad on the plate