If you see a green ring around the yolk of your boiled eggs, there’s no need to panic – it’s a natural chemical reaction, but it doesn’t affect the taste in any way.
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Still, many people find it unsightly. Below you’ll find out why it occurs and how to easily prevent it.
Why does a green ring form around the yolk?
When egg white and yolk are left in boiling water for too long, the iron in the yolk reacts with the sulfur in the egg white.
The result is
iron sulfide – a gray-green ring that is harmless but visually unsightly.
Hot water and long cooking times are the main culprits of this reaction.
