1. Potatoes and onions cut into pieces
2. Sauce ratio: 2 scoops of black pepper sauce, 1 scoop of cooking wine, 1 scoop of light soy sauce, 1 scoop of dark soy sauce, 1 scoop of oyster sauce, 1 scoop of white sugar, 1 scoop of cornstarch, half a bowl of water, and mix well
3. The fat cow is blanched in the pot and the water changes color and remove it
4. Fry the potatoes in a frying pan, pour in the onions and fry until soft, then pour the fat beef
5. Pour in the prepared sauce and sprinkle chopped green onion before serving
