When you see a green ring around an egg yolk, it’s a sign that…

It’s a Sign the Egg Was Overcooked

The green ring forms when eggs are cooked too long or at too high a temperature. During prolonged heating, sulfur in the egg white reacts with iron in the yolk. This chemical reaction creates iron sulfide, which appears as a green or gray ring on the surface of the yolk.

The longer and hotter the cooking process, the more noticeable the ring becomes.

Is the Egg Still Safe to Eat?

Yes. An egg with a green ring is generally safe to eat, as long as it was fresh and properly stored before cooking. The color change affects appearance and texture more than safety.

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