Tender Beef in 5 Minutes! Chinese Secret to Soften the Toughest Beef

In the same skillet, increase the heat to high. Add the beef slices, spreading them out in a single layer. Let them sear without moving them for about 1 minute, then stir-fry quickly until the beef is just cooked through, which should take another 1-2 minutes. Avoid overcooking to keep the beef tender.
6. Combine and Serve:
Return the cooked vegetables to the skillet with the beef. Pour the prepared sauce over the beef and vegetables. Stir well to combine, cooking for an additional minute to ensure everything is heated through and coated in the sauce.
7. Serving:
Serve your tender beef immediately, garnished with sesame seeds or fresh herbs if desired. This dish pairs wonderfully with rice, noodles, or even a simple side salad for a complete meal.