Hot box is an energy efficient therrmocol box which keeps the temperature intact for hours, thereby saving energy and fuel. It is ideal for rice cooking and for keeping normal food items hot. Rice is cooked in boiled water. The boiling point of water is 100 degree c. and the water temperature doesn’t rise above that level even it is heated further. When we cook rice in the normal method, we keep the fire till it is cooked. But if we can keep the water temperature at 100 degree c. without heating further, it saves fuel. This is what the Hot Box does. Put the rice in water, heat it and stop the fire when it is boiled. Take the bowl and put it into the Hotbox in the specified way, close it tightly with the lid provided. After 3/4 – One hour, the rice will be cooked fully.