Fried Rice
Leftover rice is not only acceptable here but practically mandatory: fresh or warm rice does not fry well, but clumps together and sticks to the wok. You need cold, stale rice, which separates during cooking. If you have neither roast pork (even the Cuban Lechon Asado, page 375, will work) nor Chinese sausage, ham is a fine substitute. No meat at all is fine, too, of course; see the variations.