1. Cut beef tenderloin into 2 cm cubes and marinate with egg white, black pepper, a little oyster sauce and starch 10 minute.

2. Heat the vegetable oil in the pot, pour in the marinated beef and take it out for later use.

3, another pot, put butter in the pot, stir-fry the garlic cloves until golden brown, pour in the beef and stir-fry the appropriate amount of oyster sauce, and sprinkle with chopped black pepper before fishing out.