With family and friends back to their usual routines after the holiday, many are left wondering how long those delicious Thanksgiving leftovers—like turkey, mashed potatoes, and casseroles—will remain safe to eat.

According to FoodSafety.gov, the official source for food safety information, Monday marks the last day most Thanksgiving leftovers can be safely consumed. After four days, food kept in the refrigerator may start to grow spoilage bacteria, leading to unpleasant smells or tastes. In contrast, leftovers kept in the freezer can last for several months, sometimes even until spring.

For best results, leftovers should have been stored properly within two hours after cooking, as letting food cool before storing can allow bacteria to grow.

If you want to clear out the fridge this week, here are some important tips for reheating and enjoying your Thanksgiving leftovers.

How long can turkey and side dishes last in the fridge?

Turkey and side dishes can be stored in the refrigerator for three to four days, as noted by FoodSafety.gov, meaning they should be good until Monday after Thanksgiving.

However, turkey and sides kept in the freezer will maintain their best quality for two to six months.

Tips for reheating refrigerated leftovers

When reheating your leftovers, ensure they reach a minimum temperature of 165 degrees Fahrenheit, as advised by FoodSafety.gov. It’s important to check various spots in the food to ensure even heating.

If using a microwave, covering the food in a microwave-safe dish will help maintain moisture, assuring that the food heats evenly throughout. Spread the food out evenly in the dish too for better cooking results.

To reheat soups, sauces, or gravies, using a pan on the stovetop is recommended. Bring these liquids to a full rolling boil, following the advice from FoodSafety.gov.

Is it safe to reheat frozen leftovers directly?

Yes, you can safely reheat frozen Thanksgiving leftovers without thawing them first, but it will take longer compared to thawed food.

Best practices for thawing leftovers

When thawing leftovers, the most effective methods are the refrigerator, microwave, or cold water. Thawing in the refrigerator takes the longest but ensures that leftovers stay safe during the entire process.

When using cold water for thawing, ensure the leftovers are sealed in a leak-proof bag, as advised by the Food Safety and Inspection Service. If a leak occurs, it could allow bacteria from the water or air to contaminate the food.

Reusing thawed leftovers

Leftovers that have been thawed can be refrozen if they have been fully cooked. Remember to follow safe thawing and reheating techniques when enjoying them afterward.

How to dispose of a Thanksgiving turkey carcass

If you still have a complete turkey carcass, it’s acceptable to throw it in the regular trash going to a landfill. However, before disposing of it, consider placing it in a sealed plastic bag or airtight container.