Researchers lay bare their secret on cooking the perfect hard boiled egg after using over 100 eggs to test it out, and it's not like any recipe you've read before

The perfect boiled egg has a velvety yolk paired with a soft, solid white. Achieving this balance can be a challenge because the yolk cooks at a lower temperature than the white. Hard boiling an egg can yield a chalky yolk, while cooking low and slow can produce jelly-like, undercooked whites.