Once the eggs are boiled, ... Since the discoloration occurs when eggs are overcooked, another useful tip is to simply cook ...

The “green” on boiled eggs shows where they saved you from your own attempts at chemical warfare. Hydrogen sulfide is a toxic gas, flammable and much-feared by miners.

Exactly how long hard-boiled eggs last in the refrigerator. ... adding that overcooked eggs will smell like sulfur, and rotten eggs will smell, well, rotten thanks to hydrogen sulfide ...

In a properly hard-boiled egg the white should be fully set but not rubbery, while the yolk should be firm and bright yellow. If the yolk has a green ring around it, that means you’ve overcooked ...