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How to cook the perfect boiled egg, according to scienceThe 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.
Researchers cooked hundreds of eggs and used math to tackle this runny conundrum. One equation dealt with how heat travels between a hot surface and an egg; another captured how the egg’s contents morph from liquid to solid with a gel-like state in between.
Their final recipe involves transferring eggs in a steamer basket every two minutes between two bowls of water — one boiling and the other lukewarm at 86 degrees Fahrenheit (30 degrees Celsius) — for a total of 32 minutes before cooling under running water and peeling
Nature: Periodic cooking of eggs