Eggs need to be handled safely. You need to take the same precautions that you would for chicken, meat, seafood and dairy products. Eggs must be kept clean, intact and fresh; stored at cool temperatures; and cooked well.
The delay in the growth of Salmonella in eggs has been found to be temperature dependent. For eggs held at room temperature, growth may be inhibited for 2 to 3 weeks. Conversely, for eggs stored at 37°C, growth may occur in a few days.
In Europe it's a health risk to store eggs in the fridge. In Australia, it's a health risk to store them out of the fridge. Who is right? The answer is all about Salmonella, the general name for about 2,000 types of bacteria that lead to food poisoning.
A cold egg left out at room temperature can sweat, facilitating the growth of bacteria that could contaminate the egg. Refrigerated eggs should not be left out for more than two hours.
Should you put eggs in the fridge? Eggs don't need to go in the fridge, but they'll last longer if they do. If they've been washed or refrigerated before (for instance, at the supermarket) then they should also go in your fridge at home.
Storing eggs at room temperature isn't advised in the United States because of Salmonella and other pathogens. When we asked Clark whether it's safe to keep store-bought eggs at room temperature in the U.S., her answer was a clear "no."
If that's the case, then why are eggs not stored in fridges at the supermarket? Well, there's a simple explanation for that. It's apparently because store temperatures are kept below 20ºC, so refrigeration is unnecessary. 'This also prevents significant temperature fluctuations.
Store whole eggs in a cool dry place, ideally in the fridge, until you use them. Storing eggs at a constant cool temperature will help to keep them safe. Do not use eggs after their 'best before' date.
And salmonella can spread quickly when eggs are left out at room temperature and not refrigerated. “A cold egg left out at room temperature can sweat, facilitating the movement of bacteria into the egg and increasing the growth of bacteria,” the USDA states on its website.
The case for refrigeration, however, is bolstered by the fact that the shelf life of refrigerated eggs is around 45 days, whereas unrefrigerated eggs are good for only about 21 days.
What's the best way to store eggs? The best way to keep eggs is to store them in their original carton in the refrigerator as soon as possible after purchase. Cartons reduce water loss and protect flavours from other foods being absorbed into the eggs.
Many European countries, like the UK, vaccinate their hens to prevent the transmission of salmonella when the hens lay eggs. The vaccinations, in conjunction with the protection of the “cuticle,” are thought to protect the European eggs from bacteria, therefore they don't refrigerate their eggs.
Best practice is to store eggs in the fridge; that way the temperature is always at a constant and your eggs will be fresher!
Keeping them in the fridge inhibits the growth of many bacteria and means eggs can be kept for up to six weeks - but always check the best before date.
The practice of storing eggs in lime water goes back centuries, and it's still one of the best ways to preserve eggs without refrigeration. Anyone who has kept chickens knows that egg production doesn't always line up with demand.
Eggs should not be stored on the refrigerator door, but in the main body of the refrigerator to ensure that they keep a consistent and cool temperature. Leftover raw egg whites and yolks should be put in airtight containers and stored in the refrigerator immediately.
Refrigerator Storage: Refrigerate eggs at 40°F or less. Store them in their original carton on an inside shelf and away from pungent foods. The temperature on an inside shelf remains more constant than one on the door, which is opened and closed frequently.
“The shelf life of an unrefrigerated egg is 7 to 10 days and for refrigerated egg it's about 30 to 45 days,” notes Dr Batra.
British authorities actually discourage refrigerating eggs on the theory that chilling and then warming could create condensation, which would allow salmonella to penetrate the shell.
In Europe, farms vaccinate chickens against salmonella. That means the cuticle is still intact when eggs are sold. Refrigerating eggs with the cuticle intact could actually cause mildew to grow. Which could cause… you guessed it salmonella contamination.
If you've been to a country other than the USA, you might have! Most countries do not store their eggs in refrigerators. Instead, they leave them out at room temperature. This might seem like a food safety hazard, but both methods are safe.
This rule is simple. If you prefer unsalted butter, refrigerate it. Same goes for whipped butter. If it creeps above 70 degrees Fahrenheit in your kitchen, all butter should go into the fridge to avoid going bad — even into the freezer if you want to store it for a few months.
Most people will still put them in the fridge at home, but because in Germany and most of Europe eggs are not washed and sterilized, unlike in the US and Canada, whereby the protective layer on the outside can be damaged, eggs don't HAVE to be refrigerated so the store sells them on the shelf.
Husbandry and hygiene practices in Europe
In Europe, it is unlawful to wash eggs because this process is believed to damage an outside layer of the egg shell known as the cuticle, making it easier for bacteria to penetrate the inside of an egg.