How to make purple sweet potato glutinous rice cake

The old saying "Misfortune comes from the mouth, trouble comes from the mouth" makes a lot of sense, because the latest medical research has found that the vast majority of diseases in the human body are caused by "eating". So for the sake of health, we must eat healthily. To eat healthily, it is best for us to cook for ourselves. Now, please learn from me how to make purple sweet potato glutinous rice cakes.

Maybe you have eaten purple sweet potato glutinous rice cakes before, but after reading the introduction above, you finally know how it is made. What reason is there for you to make it yourself?