Soak meat in water with 1.5 tbsp salt for 30-40 minutes. Rinse. Peel off excess, cut into pieces. Marinate in mustard and meat spices for 50 minutes.
Place in a well-heated skillet with olive oil. Fry over high heat until all the water is gone, stirring occasionally. Next, reduce the heat and fry until medium soft - brown the meat. Add onion and fry until cooked. We try it for salt. I didn't salt any more. The meat after mustard is very soft, juicy and aromatic.