Why Do Hard-Boiled Eggs Get a Green Ring Around the Yolk?

🥚 Why Do Hard-Boiled Eggs Get a Green Ring Around the Yolk?
✨ Introduction
Sometimes, when you cut open a hard-boiled egg, you might notice a green or gray ring around the yolk. It may look unusual or even concerning—but it’s actually very common and completely harmless.

đź§Ş The Real Reason
This greenish ring is caused by a natural chemical reaction between two elements inside the egg:

Sulfur in the egg white
Iron in the yolk
When eggs are cooked too long or at high temperatures, these elements react and form iron sulfide, which creates that green or gray color.