Moonlight can score posts! Experience+10 That is anthocyanin, and purple cabbage (purple cabbage) also contains this substance. Anthocyanins are extremely unstable, red when acidic, green when alkaline and purple when neutral. It has something to do with the pot and tap water you use. Hehe, I learned it in preschool education with my baby. Anthocyanin has a good antioxidant effect and is harmless to the body! View original post >>