Stir-Fried Beef Fillet with Oyster Sauce

If you have master stock to hand, use it to simmer the shiitakes. It contributes an exquisite flavour and texture; the mushrooms take on a meaty feel in the mouth, which mirrors that of the beef. The addition of pickled ginger gives a sweet-sour finish to this dish, a trick learnt from kylie kwong when she cooked at wockpool.