Binchotan, the name given to white charcoal in Japan (which by many accounts is the country which first popularized its usage), is made by steadily steam-activating oak wood over a long period of ...

Fruit processor and vendor Dole Japan Inc. refuses to let bananas that are unsellable go to waste. It turns them into charcoal. It is hoping its banana-based fuel will become commercially ...

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which the Japanese call tamahagane ("jewel steel"). Over three days and three nights, smelters using ancient techniques shovel roughly 25 tons of iron-bearing river sand and charcoal into the ...