Beef should be marinated with egg white, baking soda, starch and oyster sauce to be tender.

Preparation materials: egg white, baking soda, cornstarch, oyster sauce

I. First, cut the beef into strips and put it into a bowl.

Two, then pour a little oyster sauce.

Three, mix well.

four, add a little baking soda.

V. Then add the egg white.

VI. Add a little more cornstarch.

seven, and then scratched evenly with your hands, marinate for 20 minutes.