Cook the pasta in plenty of boiling salted water for about 10 minutes
Wash the mushrooms and spring onions. Halve mushrooms and cut spring onions into rings. Dab schnitzel dry and cut into thin strips
Heat 1/2 tsp. oil in a coated pan. Brown the meat all around, remove
Heat 1/2 tsp. oil in the frying fat. Sauté mushrooms and spring onions in it. Season with salt and pepper. Stir in 1/8 l water and stock, bring to the boil. Simmer for about 2-3 minutes.
Stir the mustard into the sauce and thicken slightly. Add meat again. Stir in sour cream (do not boil any more!). Season the sauce again. Drain the noodles and serve with the shredded meat