Why are some hardboiled eggs more difficult to peel than others?

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I follow the [rolling technique](https://www.youtube.com/watch?v=qLjCDNoRC-g) to crack all my eggs. Most of the time the shell splits into 2 easily separable pieces. Every so often the technique fails and rolling the egg results in very small cracks making it very difficult to peel. Is it the way I’m boiling/storing/cracking the eggs? Please ELI5.

In: Biology

4 Answers

Anonymous 0 Comments

I’d like to know as well.

I have tried:
– use older eggs
– use fresh eggs
– put salt in the water
– put vinegar in the water
– drop into already boiling water
– start in cold water and let it boil
– shock with cold water

And probably several other techniques.

It seems random to me. Sometimes it works, sometimes it doesn’t.

Murphy’s Law clearly applies here as well. If I need eggs for something where the appearance doesn’t matter (egg salad), they generally peel nicely. If I need them to look nice (deviled eggs) then it’s a struggle to peel them and they look terrible 😂

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