Bakuhanseki

• Bakuhanseki
  Shirakawa-cho, Gifu-ken, Japan
  
  This stone was named Bakuhanseki (Barley-rice stone) because it looks like rice boiled with barley.
  In a book from Chinese Ming dynasty, it is mentioned that Bakuhanseki is highly effective as pus absorbent on purulent wound.
  Also Bakuhanseki turns tap water to more healthy water by keeping water in a jug with Bakuhanseki.