Distribute oil evenly enough to roast three ingredients 30 g butter 30 ml of vegetable to each pan. Cut the potatoes into thin slices, fry on medium heat until soft (approximately 10-15 minutes) on their part of the oil.

Pork cut into small cubes, fry on the second side of the oil until slightly Golden brown.

Onion cut into half rings, mushrooms - thin slices and fry in the remaining oil over medium heat for 7-10 min.

Mix sour cream and tomato paste (sauce). Season with salt and pepper, add the sugar.

It is necessary to take a fireproof dish with lid, brush it with oil. And put layers: first a layer of pork, then half the potatoes, then mushrooms with onions and remaining layer of potatoes. Pour over the sauce. Close the lid and send in the oven at a temperature of 180 deg. 35-45 min. to Make the sauce a little too salty, so salty all the food. 20-25 min. this beauty better mix. I did not, and the top layer was dry. Everything is ready.