Hardwood sawdust is collect from sawmill as raw material to form into the stick of either square or hexagon shape under high pressure. No binding agent require during the process. It is further carbonized into high-quality charcoal, with carbon content more than 80%.

With its higher carbon content than normal black charcoal, it is able to produce metallic sound when hit against another object, know as having the same characteristic with the Japanese “White Charcoal / Binchotan”.

Japanese charcoal briquettes made from sawdust are called Ogatan.