How Black Bean Drinking Powder is made?

Black bean drinking powder is made from black bean and sesame. First, black bean and sesame are harvested from the field. Then, they are transported to a mill. Consequakly, they are seleted, removed and cleaned. Next, the materials are heated and cooled to put in refrigertor After this, they are milled to become powder. If quality is wonderful, the powder is packed to be sold.