Peel and finely chop the onion. Heat 2 tablespoons of oil in a casserole, sauté onion in it, add sauerkraut with liquid, pluck with a fork. Fry briefly while turning, season with salt, pepper and sugar.
Cover and stew for about 15 minutes. Drain the peppers and cut them into thick strips. Stir into the sauerkraut about 2 minutes before the end of cooking.
In the meantime heat 1 tablespoon of oil in a coated pan. Fry about half of the potato noodles for 8-10 minutes, season with salt and pepper and keep warm. Prepare further potato noodles in the same way.
Wash parsley, shake dry, pluck off leaves and cut into fine strips, stir into the pasta.
Meanwhile wash the meat and pat dry. Heat clarified butter in a large pan. Fry the meat for 2-3 minutes on each side. Arrange meat, potato noodles and sauerkraut on plates, sprinkle meat with ground pepper.
It goes well with mustard.