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5 ways to tell if an egg is fresh or rotten

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🥚 4. Inspect the Shell (Before You Even Crack It)

Sometimes the outside gives away what’s inside.

🔍 Check for:

  • Cracks or slimeCould indicate bacterial contamination
  • Powdery residueMay be mold
  • Unusual discolorationBest to toss

Clean, dry, uncracked shells are a good sign.


🔦 5. Use the “Candling” Method (Advanced, but Fun!)

This old-fashioned method is still used by egg producers today.

💡 How to Do It:

  • In a dark room, shine a flashlight through the large end of the egg.
  • Observe the air cell, yolk, and white.

What It Means:

  • Small air pocket, yolk centeredFresh
  • Large air pocket, moving yolkOld or bad

This method takes a little practice, but it’s a great way to “see inside” the egg.


Bonus Tip: Know the Shelf Life

  • Raw eggs in the shell ➜ Last 3–5 weeks in the fridge
  • Hard-boiled eggs ➜ Last 1 week refrigerated
  • Best-by date ➜ A good guide, but not always accurate — use the tests above to be sure.

🧁 Final Thoughts

Eggs are one of the most versatile and affordable sources of protein — but safety is key. The next time you’re unsure about that lonely egg in the fridge, just run through these simple tests:

  • Float it 🥚
  • Sniff it 👃
  • Shake it 👂
  • Inspect it 👀
  • Shine it 🔦

You’ll avoid food waste, save money, and most importantly — stay safe in the kitchen.


Would you like a printable kitchen cheat sheet or infographic version of this guide?

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