This Teriyaki Beef and Walnut Stir-Fry is a delicious and nutritious dish that combines tender beef, crunchy walnuts, and a flavorful teriyaki sauce. The beef is marinated in a mixture of soy sauce, ginger, and garlic, then stir-fried with vegetables and walnuts. The teriyaki sauce adds a sweet and savory glaze to the dish, making it a perfect accompaniment to steamed rice or noodles. This stir-fry is quick and easy to make, making it a great option for a weeknight dinner.