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Eggs are a delicious ingredient that can be used in a variety of dishes. Before you cook eggs, it's important to know whether they are fresh or not. Rotten eggs can lead to food poisoning. To test your eggs for freshness, you can use the float test or smell and examine a cracked egg. If the egg is fresh, you can use it however you want. If you find the egg is rotten, you should throw it away.

Method 1
Method 1 of 2:

Using the Float Test

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  1. How.com.vn English: Step 1 Fill up a large glass or bowl with room temperature water.
    The bowl or glass should be large enough so that it can hold the entire egg. Fill the container up 3/4 of the way, or enough so that the entire egg will be submerged once you put it in the container.[1]
    • If you don’t have a bowl or glass big enough, you can use a bucket or any container that’s large enough to hold the egg.
  2. How.com.vn English: Step 2 Place the egg in the water.
    Carefully lower the egg in the water so that it doesn’t crack if it hits the bottom of the container. If you're testing more than one egg, test each egg individually so that you can determine which ones are good and which ones are rotten.[2]
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  3. How.com.vn English: Step 3 Eat the egg if it sinks to the bottom of the bowl.
    If the egg sinks to the bottom, then it’s still fresh and can be used for whatever cooking purposes that you had in mind. If the egg sinks but stands upright on the bottom of the container, the egg is still fresh but should be eaten or hard-boiled as soon as possible because it is near its expiration.
  4. How.com.vn English: Step 4 Throw the egg away if it floats.
    If the egg floats, it means that air is trapped inside of the egg and it is rotten. Eating rotten eggs can lead to food poisoning and should be avoided.[3]
    • You can compost the egg or dump the inside of the egg in the garbage disposal.
    • Do not put egg shells down the garbage disposal.
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Method 2
Method 2 of 2:

Trying Other Techniques

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  1. How.com.vn English: Step 1 Read the sell-by date on the carton.
    Eggs can usually last up to 3 weeks if stored in the refrigerator. The sell by date on the carton is usually a good indication of whether the eggs are still fresh.[4]
    • All raw eggs should be maintained in a temperature of 40 °F (4 °C) or less.
    • The sell-by date won’t tell you whether your eggs are rotten, but will give you an idea of how old your eggs are.
  2. How.com.vn English: Step 2 Crack the egg open and examine it.
    If you crack the egg open and a white ooze comes out, there’s a good chance that it is rotten. Fresh eggs will have milky or clear whites and a perky bright yellow or orange yolk. If the egg is rotten, the whites will be thin and watery or may look pink and the yolk will flatten out.[5]
    • The appearance of small red or brown spots, known as blood spots, does not mean the egg is rotten. This is normal and actually means that the egg is most likely very fresh.
  3. How.com.vn English: Step 3 Smell the egg for a neutral scent.
    Uncooked fresh eggs should have a neutral scent and should not smell sulfuric or sour. If the egg smells bad before or after you crack it, there’s a very high likelihood that it is rotten.[6]
    • Typically rotten eggs will smell bad even before you crack them.
  4. How.com.vn English: Step 4 Hold the egg next to your ear and shake it.
    If you hear the inside of the egg sloshing around, it means the egg is rotten. If you can’t hear or feel the contents of the egg move, it means it’s fresh and you can eat it.[7]
    • This is a less accurate method than examining or smelling the egg. If you’re unsure, try the other methods as well.
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  • Question
    If my eggs haven't expired yet, but give off a foul odor, are they safe to eat?
    How.com.vn English: Community Answer
    Community Answer
    They are probably not safe to eat. You could try cracking one over a bowl. If the contents smell like sulfur, you have a rotten egg on your hands.
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      Tips

      • Lightly beaten eggs can be kept covered in the refrigerator for up to 2 days.[8]
      • Always cook meat and poultry, including eggs, to the proper temperature to prevent food poisoning.[9]
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      Things You'll Need

      • Eggs
      • Bowl or cup
      • Water

      About This Article

      How.com.vn English: Ollie George Cigliano
      Co-authored by:
      Private Chef & Food Educator
      This article was co-authored by Ollie George Cigliano. Ollie George Cigliano is a Private Chef, Food Educator, and Owner of Ollie George Cooks, based in Long Beach, California. With over 20 years of experience, she specializes in utilizing fresh, fun ingredients and mixing traditional and innovative cooking techniques. Ollie George holds a BA in Comparative Literature from The University of California, Berkeley, and a Nutrition and Healthy Living Certificate from eCornell University. This article has been viewed 116,629 times.
      19 votes - 90%
      Co-authors: 20
      Updated: October 21, 2022
      Views: 116,629
      Article SummaryX

      If you’re not sure how to tell if your eggs are fresh, fill a large glass or bowl with enough water to completely submerge an egg. Carefully lower the egg into the water and watch to see whether it sinks or floats. If the egg sinks to the bottom of the bowl, it’s still fresh and you can use it for whatever you like. If the egg floats, however, it is no good and you should throw it out. Never eat spoiled eggs, as you can get seriously ill. Keep reading to learn how to tell whether an egg is fresh after you’ve cracked it!

      Did this summary help you?

      Thanks to all authors for creating a page that has been read 116,629 times.

      Reader Success Stories

      • How.com.vn English: Anonymous

        Anonymous

        Jan 27

        "I get farm eggs and need to be sure they are fresh. Thanks for the info."
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