sFlat rice noodles stir-fried over intense heat in a well-seasoned wok with ingredients like, bean sprouts, and fish cake, etc. The 'X factor' that makes it so addictive is the distinctive wok hei flavor created by the masterfully stir-frying technique. setFlat rice noodles stir-fried over intense heat in a well-seasoned wok with ingredients like, bean sprouts, and fish cake, etc. The 'X factor' that makes it so addictive is the distinctive wok hei flavor created by the masterfully stir-frying technique. set.