Store leftover cooked turkey in the refrigerator for up to four days. When reheating turkey, be sure to only reheat what will be served instead of all of the turkey at once, since food will lose moisture and flavor every time it is reheated. Turkey and other leftovers should be reheated to reach an internal temperature of 165 degrees Fahrenheit, and turkey reheated in the microwave should be covered and rotated during cooking to ensure even reheating.
Seal and store any leftover turkey in the freezer. Slice the turkey, and then wrap it in aluminum foil or freezer paper before sealing it in a freezer bag. Press out any remaining air in the bag before sealing it. It is acceptable to keep turkey in the refrigerator for a few days prior to freezing, but the sooner it's frozen, the fresher it will taste when it is eventually consumed.
Always allow food to cool thoroughly, however, before freezing it, and be sure to label and date the turkey for ease of ascertaining if it is still safe to eat later on. According to the United States Centers for Disease Control and Prevention, turkey slices can be safely stored in the freezer for up to four months when stored at 0 degrees Fahrenheit or lower.