Why Hard-Boiled Eggs Get a Green Ring (and How to Stop It)
You crack open a hard-boiled egg, slice it in half, and there it is: a dull green ring circling the yolk. It looks a little alarming, and plenty of…
How to Boil Eggs the Right Way
The key to preventing the ring is gentle, controlled cooking. Aggressive boiling for a long stretch is the most common culprit.
- Place your eggs in a saucepan and cover them with cold water by about an inch.
- Bring the water to a rolling boil, then immediately lower the heat.
- Let the eggs simmer gently rather than boil hard.
- Cook for about 9 to 12 minutes, depending on the size of the eggs and how firm you like the yolk.
Simmering instead of boiling keeps the temperature moderate, which slows down that sulfur-and-iron reaction. Nine to ten minutes gives you a yolk that is set but still creamy, while eleven or twelve minutes produces a firmer, more crumbly center.