Combine the rice wine, soy sauce, and oyster sauce, and set aside
Heat the oil in a wok until very hot and stir-fry the garlic for a
few. Add the prawns and stir-fry briskly until they change color. Add
the peas and oyster sauce mixture, and stir-fry for another 30
seconds, then add water and bring to a boil. Thicken the broth with
the corn starch with salt and sugar. Serve immediately.