If eggs have a green ring around their yolk, what does it mean?
Have you ever noticed a grayish-green ring around the yolk of a hard-boiled egg? While it may look unappetizing, it’s harmless and caused by a simple chemical reaction. The Science Behind It: The yolk contains iron; the egg white contains hydrogen sulfide. When eggs are overcooked, these compounds react at the yolk’s surface, forming ferrous sulfide, … Read more