I've had this recipe for a long time. I got it from a close friend. Enjoy!
Swapping the round steak for a well-marbled flank steak changes the entire trajectory of this dish, yielding tender strips instead of the chewy leather that lean cuts often produce under direct heat. Round steak lacks internal fat, meaning it easily dries out during the braising phase unless cut strictly against the grain into uniform 1-inch strips. Achieving the right viscosity depends entirely on thoroughly dissolving the 1 tablespoon of cornstarch in cold water before introducing it to the hot pan; pouring dry starch directly into hot liquid creates stubborn lumps rather than a glossy sauce. Tomatoes should be added precisely during the final two minutes of cooking to impart acidity without dissolving into a watery puree. Pairing this iron-rich beef with a steaming bed of jasmine rice provides a neutral starch base that absorbs the savory molasses and soy reduction effectively. Steamed broccoli florets tossed in sesame oil complement the dish by cutting through the rich umami profile of the beef bouillon.