A greenish-gray ring around the yolk of a hard-boiled egg might cause concern. Is it a sign of spoilage, or something else ...

But despite your best efforts, sometimes you cut into your eggs and there's a green ring around the yolk. Ugh! To figure out ...

So if you hate the disconcerting hue and the chalky yolk and rubbery whites which usually ... at least 12 minutes can banish the risk of green eggs. You should also let your hard-boiled eggs ...

But what about hard-boiled eggs which have formed that copper-green ring around their yolks? Surely green eggs are a never-ever-eat situation? What causes the green ring around the yolks of ...