Ingredients: For the Beef Marinade: 300g (about 10 oz) beef (flank steak or sirloin), thinly sliced against the grain 1 tablespoon soy sauce 1 tablespoon cornstarch 1 tablespoon vegetable oil For the Stir-Fry: 2 tablespoons vegetable oil (for cooking) 2 cloves garlic, minced 1 small onion, sliced 1 bell pepper (any color), sliced thinly 1 medium carrot, julienned or thinly sliced 100g (about 3.5 oz)