This week, common post-holiday-cooking-frenzy questions: Where do I place a meat thermometer in my turkey? And how do I use a meat thermometer? Use a meat thermometer to test cooked food for doneness.

Many home cooks and grill masters cook up their steaks and hamburger patties using the old-fashioned eyeball test. This is when you flip the patty after it turns brown and grill marks start appearing.