Beef Broccoli

Name: Beef Broccoli
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: Asian, Chinese
Ingredients: 1 pound beef sirloin (sliced thin and cut into strips); 1 egg white; 1 tablespoon cornstarch; 1 tablespoon Chinese cooking wine; 1/2 teaspoon salt; oil; 2 broccoli crowns (cut into florets); water; 1 small onion (peeled and sliced thinly); 3 cloves garlic (peeled and finely minced); 1 thumb-sized ginger (peeled and grated or finely minced); 1/4 cup poaching liquid (reserved from parboiling broccoli); 3 tablespoons oyster sauce; 2 tablespoons Chinese cooking wine; 1 tablespoon rice vinegar; 1 tablespoon soy sauce; 1 teaspoon brown sugar; 1 teaspoon sesame oil; 1 teaspoon cornstarch