I read of one college student who put himself through school on Chinese food. He said he took a how-to-cook-with-a-wok class and was amazed at how far you could stretch one pork chop and feel like you ate the whole hog.
Wife recently did the same thing with a small steak and by God, the kid was right. We ate for two days on that one small piece and never felt we didn't get enough. Amazing.