Have you ever cracked open a hard-boiled egg thinking you'd overcooked it because a green ring surrounded the yolk? Don't worry: this very common phenomenon is nothing to be alarmed about. And yet, it's always a bit disappointing when you were hoping for a perfectly golden, crisp, and appetizing yolk. Fortunately, a few simple steps are all it takes to say goodbye to that greenish border and get eggs worthy of a Parisian brunch.
Why does this green circle actually appear?
The explanation is purely natural. When an egg is cooked for too long or at too high a temperature, two elements inside—the iron in the yolk and the sulfur in the white—react together. The result: a slight greenish deposit forms around the yolk.
Good news: it's neither dangerous nor a sign that the egg is spoiled. It's simply the mark of overcooking!
Perfect cooking: the foolproof method
There is a simple technique, approved by all those who want perfect hard-boiled eggs, without unwanted coloring.
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Always start with cold water
Place your eggs in a saucepan, cover them with a few centimeters of cold water and heat gently.
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Once boiling, stop everything.
As soon as the water starts to boil vigorously, turn off the heat. This prevents the egg from overheating.
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Let it rest
Cover the saucepan and leave the eggs in the hot water:
