Silky flat rice noodles with tender beef in a rich soy and oyster sauce.
Use tamari instead of soy sauce throughout, GF oyster sauce, and check your rice noodles are GF (most are, but check). Cornflour and rice wine are naturally GF.
Have everything prepped and ready before you start — this moves fast once the wok is on. Don't overcrowd the wok or the beef will steam rather than sear.