Does Your Egg Sink Or Float In Cold Water? The Answer Reveals Whether It’s Spoiled Or Fresh

by Caroline Hockenbury
Caroline is an editorial intern who enjoys running, making origami, and beatboxing (simultaneously).

Did you know that an eggshell has over 7,000 pores?

It’s true! And as eggs age, air slowly seeps in through those tiny holes. This process then causes the classic breakfast food to spoil.

Luckily, you can run a few simple tests to decide whether or not an egg is worthy of your plate or a place in the trash. You can check the quality of your eggs right at home, with no more than a bowl full of cold water, a flashlight, and a whiff of your nose!

Check out the material list and directions below to learn useful hacks for identifying expired eggs. For more comprehensive information, be sure to watch the instructional video below.

I certainly wish I had known these helpful tips and tricks sooner!


  • eggs
  • clear bowl filled with cold water
  • flashlight


  1. Place an egg in a bowl of cold water. A fresh egg will sink and lie flat on the bottom of the bowl, a semi-fresh egg will sink and stand straight up, and a bad egg will float to the top.
  2. Shake the egg. If you hear any sloshing, it’s best to throw it away.
  3. Shine a flashlight against the shell to see the air cell. A fresh egg will reveal a small bubble at the base, while a spoiled egg will have a large bubble detached from the shell membrane.
  4. The best test comes from following your nose. Smell your cracked egg before cooking or adding it to any recipe. If you detect any sort of odor, you should throw it away.

Do you know any more tricks for spotting a spoiled egg? Please share your tips with us in the comments, then be sure to SHARE this illuminating article with your friends and family on Facebook!

Due to restrictions, this video cannot
be viewed in your region.