“Refrigerate perishable items within two hours of coming out of the oven or refrigerator. After two hours, perishable food enters the “Danger Zone” (between 40 F and 140 F), where bacteria can multiply quickly and cause food to become unsafe. Perishable food should be discarded if left out for longer than two hours, so refrigerate or freeze items to prevent food waste  .Use the Monday after Thanksgiving as a reminder that it is the last day you can safely eat leftovers. If you want to keep leftovers longer, freeze them within that four-day period. Frozen food stays safe indefinitely, though the quality may decrease over time (best quality if eaten within six months.  Make sure your reheated leftovers reach 165 F as measured with a food thermometer. Reheat sauces, soups and gravies safely by bringing them to a rolling boil.  When reheating in the microwave, cover and rotate the food for even heating. Arrange food items evenly in a covered microwave safe glass or ceramic dish and add some liquid, if needed. Because microwaves have cold spots, check the internal temperature of the food in several places with a food thermometer after allowing a resting time.”

The U.S. Department of Agriculture (https://www.usda.gov/media/blog/2021/11/22/leftovers-lets-keep-best-part-thanksgiving-safe)