When you’re in charge of cooking the turkey for Thanksgiving, it can feel like the pressure is on — and for good reason. You have to know when to thaw the bird, what temperature to cook it at, and whether or not you need to brine the turkey beforehand. However, the single most important detail of the day is how long to cook the turkey. Undercook and it’s a safety issue, but overcook and you’ll be left with a dry, tough piece of meat that you spent hours on.