Mary Berry bashes the steak for her beef stir-fry before cooking to tenderise it and then fries it as a piece (rather than in strips) for a more succulent flavour. Make the marinade by placing all ...
Heat a wok over a high heat until hot. Add half the oil and, when it’s just smoking, add the beef. Sprinkle with cornflour and stir-fry until browned all over. Remove from the pan and set aside.