through prolonged use, the product has proven to me to be useless. Make my Matcha tea whisks and thus there rum. Since this is but a natural product, it smells musty after prolonged use and can not be cleaned. Therefore no longer use him. I mean you can lather up his tea with a whisk. Tried it. Works well! For ceremonial purposes intended for one or another not indispensable. Star that the product was processed lovingly and is made of bamboo. However, those who depart solely on the matcha tea and its effects, the need determined no such thing.