Rock sugar has a sweet taste and a mild nature

Brown sugar has a sweet taste and a warm nature. In addition, brown sugar retains more minerals and other nutrients than rock sugar

But if it is used for colds, it is mainly It relies on the effect of ginger to dissipate wind and cold. The sugar is more important for a better taste. Many people cannot accept pure ginger water.

So, brown sugar is the best, but you can also use rock sugar instead