Stir-Fry Sensation: Beef and Broccoli

Ingredients

• 1 teaspoon grated fresh ginger
• 1/2 teaspoon ground black pepper
• 1/2 pound flank steak, thinly sliced against the grain
• 1 cup beef stock
• 2 tablespoons cornstarch
• 2 teaspoons oyster sauce
• 2 teaspoons rice vinegar
• 2 teaspoons soy sauce
• 2 tablespoons vegetable oil
• 1 small yellow onion, diced
• 2 cups broccoli florets
• 2 cloves garlic, minced