As the United States marks its 250th Independence Day, families will be packing away picnic trays, grill platters and dessert tables and facing the question of how to safely handle leftovers in the sizzling summer heat.
The U.S. Department of Agriculture warns that improper storage of perishable foods can quickly lead to foodborne illness as bacteria multiply in warm conditions.
Follow the two-hour rule
Perishable foods should not sit out for more than two hours, or one hour if temperatures exceed 90 degrees F.
Foods left in the “Danger Zone” between 40 degrees F and 140 degrees F can quickly support the growth of harmful bacteria such as Salmonella, E. coli and Listeria.
- Refrigerate within 2 hours (1 hour if above 90 degrees F)
- Discard foods left out too long
- Do not rely on appearance or smell to judge safety
Store leftovers safely
Rapid cooling is key to preventing bacterial growth.
- Use small, shallow containers for quick cooling
- Refrigerate or freeze promptly
- Label containers with dates
- Refrigerate leftovers at 40 degrees F or below
Large containers of foods such as potato salad, baked beans or grilled meats should be divided into smaller portions before storage.
Know how long to keep them
Even in the refrigerator, leftovers do not last indefinitely.
- Eat refrigerated leftovers within 4 days
- Freeze for longer storage if needed
- Frozen foods remain safe but quality declines over time
Reheat to safe temperatures
Proper reheating ensures any surviving bacteria are destroyed.
- Heat leftovers to 165 degrees F internal temperature
- Bring soups, sauces and gravies to a rolling boil
- Stir and rotate food in microwaves to avoid cold spots
- Avoid slow cookers for reheating
Prevent cross-contamination
Food safety risks can continue after cooking if foods are stored improperly.
- Keep raw meats separate from ready-to-eat foods
- Use clean utensils and surfaces after handling raw items
- Store leftovers in sealed containers
Where to get help
Consumers with questions can contact the USDA Meat and Poultry Hotline at 1-888-MPHotline (1-888-674-6854) or visit ask.usda.gov.
By following basic safety steps, Americans can extend their celebration of the nation’s 250th birthday without an unwanted side of foodborne illness.
