How to prevent it next time
If you want bright yellow yolks:
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Bring eggs to a boil, then lower to a gentle simmer
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Cook 9–12 minutes (depending on size)
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Immediately transfer eggs to an ice bath for 5–10 minutes
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Peel once cooled
This stops the sulfur–iron reaction from continuing.
When not to eat a hard-boiled egg
Skip it if you notice:
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A strong sulfur or rotten smell (beyond the normal egg smell)
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Slimy whites
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Pink, green, or black spots in the egg white itself (not just the yolk ring)
But that greenish yolk alone? Totally fine. 🥚✔️
If you want, I can also share the perfect foolproof method for hard-boiled eggs based on how you like your yolks.
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