What color is the ripe sand of Juni's big red teapot?

Red. Because Dahongpao, formerly known as Dahongpao, belongs to sandstone containing iron powder, the mud has a certain sandy nature, close to purple mud. After firing, the shrinkage rate of mud is between purple mud and vermicelli, the color of mineral aggregate is red, and some vermicelli are bright red, so the cooked sand of vermicelli Dahongpao teapot is red.