develops a grayish-green ring around the yolk.

Although this may look strange, it is generally harmless. The color develops when sulfur compounds in the egg white react with iron in the yolk during prolonged cooking.

The green ring does not normally mean that the egg has spoiled.

To reduce the chance of developing this ring, avoid overcooking the eggs and cool them promptly after boiling.

7. Hard-Boiled Eggs Can Be Stored for Several Days

Properly refrigerated hard-boiled eggs can generally be stored for about a week.

Keeping the eggs in