The inspection mark on the packaging tells you the turkey was prepared in a USDA or state inspected plant under controlled conditions. Follow package directions for thawing, reheating, and storing. Thaw the wrapped, precooked frozen turkey on a tray in the refrigerator. Allow at least 24 hours of thawing time for every 5 pounds of turkey. Small packages such as stuffing, gravy, or potatoes will thaw in less time.
Side dishes can go from freezer to oven.
Once the precooked turkey thaws, it can be eaten cold or can be reheated. To reheat a turkey, slice breast meat. Legs and wings may be left whole. Reheat turkey pieces and all side dishes thoroughly to 165 F, until hot and steaming. Bring gravy to a rolling boil.