Why Cook with Sand Pot

Cantonese, at least, consider the best way to cook rice is using sand pots. One of the reason is what's in this picture. The sand pot seems to allow for higher flame when cooking rice without burning it. I bring it to a boil and then reduce to medium heat. Usually this is too much and the bottom of the rice would burn. With the sand pot, the rice become crispy without burning instead. This impart a nutty flavour to the rice and a light and crispy layer at the bottom. After the rice to taken out, leave the pot on medium low heat for a few minutes to completely crisp up and it is quite a treat.