binchotan : charcoal products
I appreciate the careful selection of products available from New Zealand's Douglas and Bec shop. Their newest addition is a line of charcoal products from Japan - such as an eye mask, facial soap, body scrub towel, pumice stone and charcoal sticks for water or room purification.
Their description does the trick:
The Japanese have been using Binchotan charcoal for its purification, skin care and health properties for centuries. The tradition of producing Binchotan comes from the Kishu region of Japan, where oak branches are burnt until red hot and then cooled down rapidly.
The more we research Binchotan, the more uses we find for it. To use Binchotan sticks for water, simply clean off any loose charcoal and rinse off, then boil for around 10 minutes. Pop it in a jug of water and you are ready to go. Along with drawing out impurities and chemicals (like chlorine), they add nutrients such as magnesium, manganese, calcium, and iron to your drinking water.