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

When You See a Green Ring Around an Egg Yolk, It’s a Sign That…

If you’ve ever sliced open a hard-boiled egg and noticed a greenish-gray ring around the yolk, you might have wondered whether the egg has gone bad. The good news? That green ring usually isn’t a safety issue at all. It’s actually a clue about how the egg was cooked.

Here’s what that strange color really means.