1. In a small bowl combine soy sauce, lemon juice, cornstarch, dark brown sugar, garlic, and pepper. Set aside.

2. Heat 1 tablespoon vegetable oil in a large skillet or wok over medium-high heat. Add beef and stir fry until almost cooked through, about 2 minutes. Transfer beef to a plate and cover to keep warm.

3. Heat remaining oil in skillet. Add onions and stir fry for 5 minutes. Cut broccoli into florets (should yield about 4 cups) and add to skillet with 1/2 cup water. Bring to a boil, cover, reduce heat and simmer for 3 minutes.

4. Return beef to skillet with soy sauce mixture; add ginger. Bring to a boil and cook, stirring consistently, until sauce thickens about 2 minutes serve hot.