Clean the oyster mushrooms from the remains, quickly rinse in cool water (mushrooms, like a sponge, quickly absorb water), cut off the stalks, chop them coarsely, put them in a frying pan (rinse after the onion), add a little salt. On high heat, evaporate the juice, add a little oil + a tablespoon of dry marjoram, fry the mushrooms until light brown. Just like the onion, add together with the oil to the pearl barley, cover with a lid.