Method:

1. Combine marinade ingredients in a bowl. Add beef and stir to coat. Let stand for 10 minutes. 

2. Combine sauce ingredients in a bowl.

3. Place broccoli in a large pot with 1 inch of boiling water. Boil until 

tender−crisp, 2 to 3 minutes; drain.

4. Place a wok over high heat until hot. Add oil, swirling to coat sides. Add 

garlic and chilies and cook, stirring, until fragrant, about 10 seconds. Add 

beef and stir−fry until no longer pink, 1 1/2 to 2 minutes.

5. Add broccoli and sauce to wok; bring to a boil. Add cornstarch solution 

and cook, stirring, until sauce boils and thickens.