As high heating technology develops, it is getting hard to distinguish the quality of bamboo salt with it's color, however, the difference in quality between 3 times and 9 times roasted bamboo salt is much hugger than difference just in figures. It is difficult to expect to have the effectiveness of 9 times roasted bamboo salt from 3 times one. However, more important thing to use 9 times roasted bamboo salt all the time is that it is better to use the bamboo salt in our daily routine even it is 3 times roasted one.