Beef Stir-Fry with Green Peppers and Black Bean Sauce is a delicious and easy-to-make dish that combines tender beef slices with crunchy green peppers in a savory black bean sauce. The beef is marinated in a mixture of soy sauce, rice wine, and cornstarch, which helps to tenderize the meat and enhance its flavor. The green peppers are stir-fried until they are slightly charred and retain their vibrant color. The black bean sauce is made with fermented black beans, garlic, ginger, and a touch of soy sauce, creating a rich and umami-packed sauce that coats the beef and peppers. This dish is perfect for a quick weeknight dinner and pairs well with steamed rice or noodles.