High-Grade Charcoal for Cook -炊飯・飲料水用 紀州備長炭-Using the natural far infrared effect to cook fluffy rice! Kishu Bincho charcoal has countless amounts of invisible micro holes that absorb water, chlorine, fishy smells, rice brans, and etc. To use this charcoal, first wash off the ash on the surface with a scourer, boil, and dry in the sun. After every use, it will need to be boiled and dried in the sun once a week. Each charcoal can be used for 3 months if used daily! After the 3 months, you can