Cut the beef with black pepper into rectangular thin slices, add baking soda and mix well. Leave it for half an hour.

2. Take out the beef, add the egg white and soy sauce, and grab the cooking wine. Put 1 hour.

3. Add chicken powder and starch to the beef, put it in an oil pan until cooked, pour it into a colander and drain the oil for later use.

4. Put the wok on the fire, put the oil, add the onion and saute until fragrant, add the black pepper sauce, salt and chicken essence to taste, add the beef slices, stir well and put them in the pot.