Korean Stir-Fried Bok Choy with Oyster Sauce
Halved lengthwise and laid cut side down in a very hot pan, the bok choy cooks stalk first and only then gets flipped so the leaf edges char a little. The oyster sauce, loosened with soy sauce and a splash of water, is just enough for a thin, glossy coat on the stalks. Properly cooked, the leaves have wilted but a stalk still pushes back with some crunch when bent.