Drain the sauce from stir-fried takeout Chinese food, since that’s where a lot of the fat lurks. Or simply leave behind the last half-inch of sauce-drenched food in the container. Better yet, order steamed dishes and ask for other low-fat preparations. And share your dishes, or take most home leftovers. Entrees are usually huge—often a pound and a half each or more, enough for four “sensible” portions.