Help make Alexa smarter on Alexa Answers. Sign in with Amazon


Why do hard boiled egg yolks turn gray?

A greenish-gray ring may appear around a hard-cooked egg yolk. It's unsightly, but harmless. The ring is caused by a chemical reaction involving sulfur (from the egg white) and iron (from the egg yolk), which naturally react to form ferrous sulfide at the surface of the yolk

{{ relativeTimeResolver(1581510497854) }}

Points points 172
Rating 1

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world