The thing to remember about smoked turkey is that it's already cooked. It just needs to be warmed up. Here's how I reheat them.
Thaw the turkey in the fridge for 2 or 3 days. If it's not completely thawed before putting it in the oven, the outside of the bird will overcook while the inside is still cold.
Cover the turkey with foil. I wrap it in a layer of heavy duty foil. This will hold in moisture, and it also quickens the reheating process.
Place the thawed, foil wrapped turkey into a 275 degree Fahrenheit oven for 3 to 4 hours, or until the temperature of the thigh and breast is between 145 and 150 degrees. If it warms to over 150, it will start to dry out.
It's been my experience that a reheated smoked turkey loses some of the smoke flavor. If I know I'm going to freeze a turkey that I'm smoking, I give it a little extra smoke to compensate for the loss of smoke flavor from freezing and reheating.
If you didn't get the thigh temp up to 180 and the breast up to 170 when you smoked it, you will need to heat the turkey up to those temperatures when you reheat it, to be safe.
