How Long Do Eggs Last? | Do Eggs Go Bad? | Rotten Eggs
How Long Do Eggs Last

How Long Do Eggs Last?

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Do they go bad? Yep, they sure do! Chicken and ducks eggs have a pretty good shelf life. But how long do eggs last really?

Ever heard of the term rotten egg? The stench of a rotten egg smells like death. Have you ever smelled a dead animal? Yeah, it’s like that.

I know it’s gross. So let’s talk about how long they last.

Why Eggs Go Bad?

They aren’t as perishable as other foods we may come by. That’s because they have a defensive barrier.

They have many layers of protection. The bloom (protective coating), the cuticle, shell, shell membranes, & albumen all help protect an egg.

This defensive barrier is Mother Nature’s way of protecting the reproduction of birds.

Over time, the protective coating on the egg (the bloom) breaks down. Eventually, air & bacteria particles are absorbed into the eggshell.

As the protective barrier breaks down, bacteria may enter the egg. It will then reproduce inside of the egg.

These bacteria will grow faster out of refrigeration, since bacteria like warm, wet environments.

However, bacteria can live not only on the outside of the eggshell. Bacteria like salmonella can enter into the egg while still inside the hen.

Proper handling, storage, and cooking of the eggs can help reduce the risk of foodborne illness.

Proper Handling, Storage, & Cooking

  • Keep the nesting boxes clean.
  • Collect eggs daily.
  • Store in the refrigerator, (they last longer).
  • Don’t wash the eggs, until your ready to use them.
  • Never eat raw eggs!
  • Use the FIFO Method. First in First Out!
  • Cook eggs thoroughly.

Collect eggs daily, and place them right in the refrigerator or store them at room temperature. Temperature fluctuations can contribute to an egg going bad.

Exploding Eggs?

Eventually, they can turn green and black inside. A really rotten egg can even “explode” under the pressure of the gas build-up. You might have experienced this little doozy if you’ve ever incubated them.

This can happen when they are laying on the counter going bad too. So watch out! Because this explosion STINKS!

I’ve experienced this first hand. I was sitting in my office one day, when suddenly, I heard a LOUD POP!

I yelled from the office, what was that noise? I have three boys, so noise is a constant in our home…but this was a noise I’d never heard before.

My sons had no idea what the noise was, so I went to inspect further.

I walked around the kitchen where I thought the sound came from. I couldn’t find anything. However, I noticed there was a strange smell…

My smeller doesn’t always work well but I could’ve sworn it smelled like boiled eggs. (you know that farty egg smell?)

I asked my son to come in the kitchen and tell me what he smelled, and he agreed it smelled like eggs. So I had some eggs sitting on the counter.

They were old, admittedly. The boys are supposed to collect them and put them in the fridge, but they were slacking on that job. Sometimes we leave a few eggs on the counter, especially if the fridge is full!

Reluctantly, I looked through the cartons on the counter, and the smell kept getting worse and worse. Then, I spotted it! An egg that literally popped!

When I got it outside to throw it in the woods, I tried to remove it carefully from the carton and then it hit me, like a ton of bricks! The smell of dead animals. Ew!

How Long Do Eggs Last on The Counter?

If you’re thinking about keeping your eggs on the counter, you’ll need a cute egg holder of course!

Some people leave their (farm fresh) eggs out on the counter. I do this sometimes. I prefer to store them in the fridge because they usually last longer.

Since the store-bought kind is already refrigerated they must stay that way. That’s 101 of food safety, and pretty much can be applied to most food items…

When you crack open an egg that’s sat at room temperature, you might notice the yolk is a more runny than usual.

That’s because the membrane that holds the yolk together gets weaker over time. Also, the albumen or egg whites are clear instead of white. These are signs that the egg is not super fresh.

Learn more about storing eggs at room temperature, so you can know exactly how long eggs last!

Here are a few more countertop egg holders.

Click the image to see them on Amazon.

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How Long Do They Last in The Fridge?

I love these plastic egg containers. They are great when you’re storing a ton of eggs! Plus, you can wash them when you have an egg crack, which is a huge bonus if you ask me!

Remember that refrigerated eggs must stay refrigerated until use!

The USDA says that they last 3 to 5 weeks in the fridge. The store-bought kind can be 45 days old when you buy them from what I’ve heard.

Farm fresh eggs usually last for about 2 or 3 months in the fridge.

Here are a few more really cool egg containers for keeping them in the fridge.

Click the image to see them on Amazon.

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How To Make Them Last Longer

Don’t wash them, before storing them! Even the USDA say no to washing eggs. Washing them can remove the protective coating (the bloom), causing the egg to become more susceptible to bacteria.

Even farm fresh eggs will last longer if stored in the refrigerator.

If they’ve been refrigerated, they shouldn’t be left out for more than 2 hours. They tend to sweat and the USDA says that could allow bacteria to get into the egg.

When you buy them in the store, make sure none of them are cracked. Cracked raw eggs are susceptible to bacteria.

If you accidentally crack an egg, you can place it in an airtight container in the fridge for 2 days.

However, if they crack during boiling them, they are safe to eat.

Some people swear by rubbing mineral oil on them that they will last longer. However, this study says that internal qualities were not very different that eggs that didn’t have mineral oil applied.

However, the application of mineral oil was helpful in maintaining physical-chemical quality even during extended periods of storage.

One could conclude that perhaps mineral oil does help them last longer using mineral oil since the physical-chemical quality is preserved for longer. However, what is mineral oil?

Since eggshells are absorbent, I feel the need to ask myself what is mineral oil and should I be ingesting it?

Mineral oil has been used to treat constipation. However, some cases show severe complications with ingesting mineral oil. (1,2,3)

There’s obviously a big difference between food grade mineral oil, and crude mineral oils. So, if you choose to use mineral oil, make sure it’s food grade!

How to Tell When an Egg is Old

Have you ever heard of the Egg Float Test? This test allow you to get a glimpse of how old an egg may be.

When I have a lot of eggs, sometimes I lose track of how old they may be. The egg float test helps me to determine if they are fresh or old.

How To Tell When An Egg Is Bad!

Determining whether an egg is good enough for consumption can be difficult. However, I have a few good tricks up my sleeve.

Here’s my trick…If you know an egg is old…SMELL IT! Just get a sniff of the outside of the egg.

Eggs tend to smell like a dead animal when they go bad. You can even smell it through the shell. Your nose can tell you when food is bad, so let it lead the way.

A bad egg maybe one or more of these things. However, it may check off one of these list items and not be bad yet. Such as a floating egg isn’t necessarily bad, it’s OLD. Or older than eggs that don’t float.

It doesn’t mean it’s bad, it means there is more air inside the egg which is creating more buoyancy. Which typically is something that happens to eggs over time, and is perfectly normal.

  • It stinks
  • It floats
  • Cracked shell – An egg that is exposed to air, is also exposed to all of the bacteria in the air. Once an egg is cracked it starts deteriorating.
  • Slimy shell – Could be an indication of a small crack or bacteria inside the egg
  • Powdery shell – Could be an indication of mold inside the egg
  • Yolks or egg whites have green, black, pink, or blue colors, indicates the presence of mold.
  • Yolks and/or eggs whites are runny. This is another indication that the egg is old. Not necessarily bad. You’ll see this a lot in unrefrigerated eggs.

If you’re ever in doubt throw it out!

Ways to Preserve Eggs

  • Freezer: Raw egg whites store okay in the freezer up to 12 months, but raw egg yolks don’t freeze well.
  • Baking them in a casserole can preserve eggs for 3 – 4 days in the fridge, or 2 to 3 months in the freezer.
  • Cure them in salt
  • Homemade Powdered Eggs
  • Pickled Eggs

Recipes That Use Eggs

In conclusion, room temperature eggs will last about 2 to 3 weeks. Refrigerated eggs will last about 3 to 4 weeks for store-bought and 2 to 3 months for farm fresh eggs.

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5 thoughts on “How Long Do Eggs Last?”

  1. Hi Kristi:
    Thanks for another wonderful article.

    My Sweetie Pie used to run a hunt club and he would care for 1500 Pheasants at a time. Once, when he needed some new Pheasants, his supplier commented that the only fertilized eggs he had were over a year old…but he was still able to hatch them. He also mentioned how long they last to eat.

    So when we started getting our first eggs last July, I forgot about the store-bought ones in the fridge and finally hard boiled them 6 months after the expiration date. Yes, they all floated in the pot and they had a bigger air space inside, but they were still very edible, which I found interesting. (Why would I eat these if I had wonderful fresh home-grown eggs? Well, I was going on a trip and I like to have eggs for some decent food to eat…and if I didn’t eat them, I planned to throw them away…which seemed sinful with the home grown ones.)

    Years ago I read that hard boiled eggs can last 1 month un-refrigerated – as long as the shell is not cracked. (Which reminded me of my childhood, where my mom would leave the Easter Eggs on the counter for weeks, till they were all eaten.) What I have learned in my travels with carrying hard boiled store bought eggs and not having access to a refrigerator, is that after about 4 days they get a bit rubbery, but are still edible. (I also wrap them in plastic wrap and it seems to really protect the shells from cracking if abused.)

    Sorry for another long comment…I seem to be a bit prolific today!!
    Sly

  2. ********************************************************
    Thank you for sharing at #OverTheMoon. Pinned and shared. Have a lovely week. I hope to see you at next week’s party too! Please stay safe and healthy. Come party with us at Over The Moon! Catapult your content Over The Moon! @marilyn_lesniak @EclecticRedBarn
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  3. This was really helpful. Thank you for including so much information. I wasn’t expecting it to be so detailed. We’ve had chickens for several years now, but I’ve been thinking about getting other egg layers like maybe ducks. Do duck eggs last the same amount of time that chicken eggs do?

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