This is ash from a wood-burning stove. The raw materials are hardwoods such as konugi (Japanese oak), kashi (evergreen oak), keyaki (zelkova), sakura (cherry), and nara (oak), which have been dried for over two years. Please rest assured that no paper with ignition agents or paints has been used. For those who only need a small amount, 800g (approx. 1.8L) will be delivered in a Yu-Packet Post box. Please use it for purposes such as removing astringency or as an incense holder.