9 Ways to Keep Leftovers Fresh Longer Without Compromising Safety

Whether you have take-out or homemade meals, leftovers will last for about 3 to 5 days in the refrigerator. Previously hot or cold perishable foods left at room temperature will also only last about 1-2 hours before needing to be refrigerated.

If you don’t store your leftovers properly or leave them in the refrigerator too long, bacteria will start to grow on your food and cause it to spoil. This can increase your risk of foodborne illnesses like food poisoning.

To make sure your leftovers last as long as possible, follow these food safety tips to keep your food fresh.

Store leftovers in the refrigerator or freezer within 1 to 2 hours of eating. Discard any foods left out for more than two hours or at temperatures above 90°F (32°C) after one hour.

Always store leftovers with a lid or wrap that protects them from bacteria and other refrigerator odors.

Store previously warm leftovers in small quantities and in shallow containers, which helps them cool quickly.

Use an appliance thermometer to make sure your refrigerator is set at 40°F (4°C) or lower and your freezer is set at 0°F (-17°C) or lower.

The FoodKeeper app (developed by the USDA Food Safety and Inspection Service) provides accurate advice on different leftovers.

If you leave hot food out for more than two hours, store the cooked food in a slow cooker, warmer or warming tray to keep it warm.

If you leave cold perishable foods like cold cuts and potato salad out for more than two hours, put them on ice.

Clean your refrigerator regularly and store leftovers away from raw meat to avoid further spreading bacteria and other pathogens.

Cook leftovers in the microwave or oven at 165°F (74°C) or higher.

How long your leftovers last depends heavily on temperature and time. Bacteria grow rapidly at temperatures between 40 degrees Fahrenheit (°F) or 4 degrees Celsius (°C) and 140°F (60°C). Once leftovers enter this temperature range, bacteria can double every 20 minutes and spoil the food. It only takes about two hours for unrefrigerated leftovers to go bad.

At warmer temperatures, above 90°F (32°C), bacteria can grow more quickly and spoil leftovers within an hour.

Storing leftovers in the refrigerator helps keep food at 40°F (4°C) and below room temperature and slows the growth of harmful bacteria. However, even if you refrigerate leftovers quickly, bacteria will still start to grow on the food and become dangerous after about 3 to 4 days.

Freezing leftovers at or below 0°F (-17°C) stops the growth of bacteria that causes spoilage. However, the quality and taste of the food will deteriorate after about 3 to 4 months.

Here are some basic guidelines for how long you can leave leftovers out:

• Hot foods: Refrigerate leftovers for two hours after cooking or after removing them from a heating appliance (such as a slow cooker or other stove).
• Cold perishable foods: Refrigerate foods like poultry, meat, fish and dairy products within two hours
• Hot temperatures: Refrigerate leftovers within an hour if you’re outside in hot weather or eating in a hot car.

Divide large quantities among several shallow containers when storing leftovers in the refrigerator or freezer. This will help foods cool to safe temperatures more quickly. This method is especially essential for foods like soup and whole meat roasts, which take a long time to cool. For example, a large roast may still be warm in the center after two hours of refrigeration, allowing bacteria to grow, while smaller portions of meat will have cooled by then, slowing bacteria growth.

Avoid storing leftovers in a crowded refrigerator, as this decreases the air circulation needed for proper cooling.

Cover your leftovers with tight-fitting lids, plastic wrap, or other reusable lids. You can also wrap cold perishable foods in sealed packages, such as plastic wrap or vacuum bags. Keeping leftovers covered and sealed helps prevent more bacteria from getting into your food. This also helps your food retain moisture and avoid absorbing odors from other foods that can taint the taste of your leftovers.

Freezing or refrigeration

If you don’t plan to eat the leftovers in 3 to 5 days, you can freeze them to increase their shelf life to 3 to 4 months. (Leftovers containing mayonnaise, cream sauces and lettuce do not freeze well or taste very good when thawed).

Frozen leftovers can technically last indefinitely, but freezing removes moisture from food, altering its taste and quality over time. This is why frozen leftovers often lose their tenderness, flavor, color and juiciness.

For best results, freeze leftovers immediately so they have already reached their optimal quality and flavor. When you’re ready to eat frozen leftovers, thaw them in the refrigerator, in cold water, or in the microwave. You should also eat thawed leftovers within 3 to 4 days, as thawed food will begin to grow bacteria.

Spoiled food is usually visible because it changes in appearance, smell and taste. Common signs that your leftovers have spoiled include:

• Color that darkens or fades
• Texture changes that feel sticky, sticky, or gooey
• Green, white or black fuzzy mold
• Foul smell or taste

What to do if you eat something spoiled

Eating spoiled leftovers introduces harmful bacteria into the digestive tract that can lead to foodborne illness, also called food poisoning. As a result, you may experience symptoms such as diarrhea, vomiting, abdominal pain, fever, and headache.

Symptoms of food poisoning may appear suddenly, 6 to 24 hours or a few days after eating spoiled food. Bacteria Staphylococcus aureus, Salmonella enteritidis, E.coli, CampylobacterAnd Clostridium perfringens are common culprits of food poisoning linked to leftovers. These bacteria thrive in foods left at unsafe temperatures between 40 and 140°F (4 and 60°C).

If you accidentally eat spoiled leftovers, don’t panic. Most cases of food poisoning last less than 24 hours or a few days. You can also usually manage the symptoms of food poisoning at home without the need for medical intervention or complications.