Take the beef, cut into pieces and repel as chops

Then each piece salt to taste, pepper and lightly sprinkle with baking soda (like salt). Pieces of meat put on each other in some vessel and put in the fridge for a couple of hours (if possible, it is possible and longer).

Meanwhile, cut the mushrooms and fry them lightly in sunflower oil.

After 2 hours take the meat, dip it in flour and fry over high heat in a frying pan. Sorry to continue to take pictures did not work, dead camera. Then cut the onion into half rings, but thin. Take the cauldron and put layers: onion, mushroom, meat, etc. Add a little water, about a Cup and simmer for 15 minutes. Then on top pour sour cream and stew for 10-15 minutes. And all can enjoy.