Is there anybody here under pressure? Do you ever feel like you live in a pressure cooker? Did you know that it takes longer to cook food at high altitudes, because at high altitudes the air pressure is much lower than in the lower plains? Because of that the boiling point of water is lower, and therefore it takes much longer to cook food.

But in a pressure cooker high pressures are built up within the vessel, which raises the boiling point of water, and food can be cooked within minutes.

In fact, the principle of pressure cooking is really fascinating. Because a pressure cooker is airtight, pressure builds up inside the pressure cooker as the liquid inside comes to a boil. The steam that is trapped inside causes the internal temperature to rise beyond what it would be capable of doing u…