Mongolian Beef with Onions and Scallions

1. Slice the beef thinly. Marinate with oyster sauce, soy sauce, cooking oil, and cornstarch. Set aside for 15 minutes.

2. Heat oil in a pan over medium-high heat.

3. Add the marinated beef and pan-fry for about 5 minutes, until browned. Remove and set aside.

4. In the same pan, add the red onion and stir-fry until slightly softened.

5. Return the beef to the pan.

6. Pour in the cooking wine, cook until the liquid is absorbed and coats the beef, add salt.

7. Add scallions. Toss briefly and serve hot.