Reference is water kefir and yogurt without salted. Peel onions and cut into discs. Mushrooms can cut them just as you see fit. The meat Hammer and in a deep pot begins to piecing meat, onions, spices, mushrooms, and each row pour buttermilk. Finally everything being covered and pour soy sauce. It is better to stand for 24 hours in a marinade, but if you do, the time you leave in the fridge for at least 2 hours. After having stayed in the marina, all angling action is repeated in the yen (or tray covered with baking foil), which will be baked. * Do not add salt to steaks, soy sauce is savory enough. For garnish can be served with baby potatoes.