Refrigerated Food and Power Outages: When to Save It and When to Throw It Out. As the USDA notes in Keeping Food Safe During an Emergency, your refrigerator will keep food safe for up to 4 hours during a power outage. Keep the door closed as much as possible.
Power Outages: During and After
Here are basic tips for keeping food safe: Keep the refrigerator and freezer doors closed as much as possible to maintain the cold temperature. The refrigerator will keep food cold for about 4 hours if it is unopened.
How long will milk/eggs last during a power outage? Milk, eggs, fish, meat and leftovers will last four hours in the refrigerator, as long as the door stays closed the entire time.
Condiments, salsa, and mayonnaise are okay when the power goes out. Pickles, bread and rolls, carbonated beverages, alcoholic beverages, butter, nut spreads, raw uncut produce, jams and jellies are fine. They may show evidence spoilage faster because of the power outage. Spoilage organisms are mold and yeast.
Throw out perishable foodin your refrigerator (meat, fish, cut fruits and vegetables, eggs, milk, and leftovers) after 4 hours without poweror a cold source. Throw out any food with an unusual odor, color, or texture. Check temperatures of food kept in coolers or your refrigerator with a cold source.
Refrigerated foods that can be held at temperatures above 40ºF until power returns include: hard cheeses, butter, margarine, fresh fruits, fruit juice, fresh unpeeled vegetables, salad dressing, ketchup, mustard, olives, pickles, jams, jellies and peanut butter.
Discard refrigerated perishable food such as meat, poultry, fish, soft cheeses, milk, eggs, leftovers, and deli items after 4 hours without power or 2 hours after the temperature rises above 41 °F.
Hard cheeses, like cheddar or swiss, are safe to keep in brick form. Soft cheeses and hard cheeses that have been shredded should be tossed if they were kept above 40 degrees Fahrenheit for 2 hours or longer. Grated cheese, like canned parmesan, is safe to hang on to. Butter and margarine are safe to keep.
Things like butter or margarine, fresh fruits that are uncut, fruit juices, peanut butter, ketchup and jelly are safe to eat after four hours without power. You can get a more detailed list of what refrigerated foods you should keep and what foods you should throw away by looking at the chart below.
During a power outage: Keep freezers and refrigerators closed as much as possible. A refrigerator will keep food cold for about 4 hours. A full freezer will stay at a safe temperature for about 48 hours.
A full freezer will hold a safe temperature for approximately 48 hours (24 hours if it is half full and the door remains closed). Food may be safely refrozen if it still contains ice crystals or is at 40°F (4°C) or below, however, its quality may suffer. Never taste food to determine its safety.
To reduce Salmonella growth, eggs gathered from laying hens should be refrigerated as soon as possible. After eggs are refrigerated, they need to stay that way. A cold egg left out at room temperature can sweat, facilitating the movement of bacteria into the egg.
Since the compressor has to work harder to maintain the temperature inside the fridge, it puts extra load and pressure. This leads to increased wear and tear on the compressor. This is potentially detrimental to the overall lifespan of the refrigerator leading to frequent breakdowns.
Good options include low-sodium canned beans, vegetables, fruit (packed in fruit juice), breakfast cereal, peanut butter, pouches of fully cooked whole grains, nuts, whole-wheat crackers, snack bars, and shelf-stable milk or plant milk (the kind sold in aseptic boxes in the grocery aisle).
I know from experience that even when kept closed, my old GE Profile won't keep stuff food-safe for more than 8-12 hours. When you do get power back, get an instant-read thermometer and check the leftovers .. if they are more than 45F, I'd think about throwing them out.
Televisions, computer equipment, game consoles, fans, lights and all other smaller appliances should be unplugged, especially if they were in use when the power went out. Larger appliances, such as refrigerators, should not be unplugged.
Discard opened mayonnaise, horseradish and tartar sauce if held above 50o F for more than 8 hours. Discard milk, cream, sour cream, yogurt, cream cheese, soy milk and eggs if held above 40o F for more than 2 hours.
Hard cheese, butter and margarine.
Well packaged products should remain safe; if odors or mold develops, discard the items.
Other cheeses, such as cream cheese, opened containers of cheese spreads and cottage cheese, brie, and gouda spoil quickly. Milk spoils quickly without refrigeration.
The USDA said refrigerators will keep food safe for up to four hours during a power outage. After that, perishable food such as meat, poultry, fish, eggs and cooked leftovers should all be put in the garbage.
Milk has been named the item most likely to expire in the fridge, according to new research. A survey of 2,000 Americans has revealed that 46 percent say they've been caught by a sour scent in their bottle or carton.
The question, how long do you have before it's a serious problem? A few minutes should be fine. In fact, even a few hours probably won't hurt. Once you get past four to six hours, though, the safest thing to do is throw out every perishable item in your refrigerator.
First, check the appliance thermometer. If the temperature inside the refrigerator has been above 40˚ for two hours or more, discard the perishable food, including eggs. See this Foodsafety.gov chart for guidelines to determine whether to keep or discard specific foods. When in doubt, throw it out!
If opened mayonnaise, tartar sauce, horseradish, commercial garlic in oil or other spreads (or any salads made with those items) have been held at 50 degrees or above for more than eight hours, discard them.
Refrigerated eggs should not be left out more than 2 hours. Any bacteria in or on an egg can multiply quickly at room temperature, and a cold egg left out at room temperature can sweat, increasing the potential movement and growth of bacteria.