French physicist’s invention

In 1679, a French physicist named Denis Papin enclosed steam in a copper container, unknowingly changing the way people cook for centuries. His invention, called a digester, was a device that used steam pressure to cook food faster.

Pressure cooking’s origins

Papin’s digester raised the temperature of water to about 120 °C, instead of the usual 100 °C, by trapping the steam inside. This higher temperature accelerated the cooking process, allowing an entire meal to be cooked using less than 200 grams of coal, as noted during a dinner at the Royal Society in 1682.

Royal Society’s historic meal

On April 12, 1682, the Royal Society in London held a dinner where an entire meal was cooked using Papin’s digester. Scientists like Isaac Newton, Robert Hooke, and Antonie van Leeuwenhoek were present, and the event was recorded in the journal of John Evelyn, who noted the surprisingly low amount of coal used.

How steam changes cooking

The digester’s principle was simple: trapping steam inside a closed container increased the pressure, which in turn raised the boiling point of water. This allowed food to cook faster and more efficiently, a concept that is still used in modern pressure cookers.

Safety valve’s invention

Early models of Papin’s digester sometimes exploded, prompting him to invent a safety valve. This device allowed excess pressure to escape, preventing the container from bursting. This innovation is the direct ancestor of the safety valves used in today’s pressure cookers.

Papin’s forgotten legacy

Despite his groundbreaking invention, Papin died in poverty, and details about his death and burial remained unknown for over three centuries. Today, the familiar sound of a pressure cooker’s whistle echoes the same principle he developed, a testament to his overlooked contribution to cooking technology.