Wash the meat dry and cut into cubes. Season with salt and pepper. In a saucepan heat the lard. Fry slightly on the meat until golden brown. Add paprika and peeled, sliced in półplasterki onions. Fry glass transition to onions. The mushrooms wash, peel cut into slices and fry in butter until liquid has evaporated and the mushrooms are lightly golden. Add them to the meat along with the sliced thinly sliced cucumbers. Season with salt, pepper and sugar. Water rosołem. Simmer on low heat until tender meat. Add sour cream mixed with flour and a little bit of water. Bring to a boil.
PLEASE NOTE! Food quite spicy ... who prefer milder taste, I propose to reduce the amount of peppers. You can also completely give it up by adding paprika sweet.