Two to three minutes. Place the dal in the voltage cooker under cold water and wait for two to three minutes for the dal to come out.

The pressure cooker was first called the "Papin cooker" and was invented by a French doctor named Denis Papin, initially as a sterilizer.

The pressure cooker, also called pressure cooker, pressure cooker. The advantage of using a pressure cooker is that not only is the cooking time short, but the food cooked tastes good, especially the meat that is not easy to cook becomes easy to cook and tastes good. However, in the earliest days, the pressure cooker was called the "Papin cooker", which was invented by a French doctor named Denis Papin.

Papin is both a doctor and a physicist, mechanical engineer. Solid theoretical knowledge of physics and mechanics is the reliable basis for his invention of the pressure cooker.

The Frenchman Denis Papin (1647-1712), did Huygens's assistant. 1675, Papin came to England, with Robert Boyle work together. 1680 he was elected to the Royal Society. 1681, he published an article introducing the "steam cooker". In 1681, he published an article on the "Steamer". A "steamboat" is a device for softening bones by boiling them in water in a sealed vessel. As we know, when water is boiled under high pressure, it has a higher boiling point, which increases its solubility.