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.

The scientists devised a way of cooking an egg that requires no special culinary skill or fancy gadgets. It took about 300 eggs, though the researchers “didn’t eat all of them,” said Pellegrino Musto,