Kim, Darel(on this list) lives in Japan, maybe he can shed some light on this material. I do know they do a lot of fermented straw and lime in walls/floors there...not sure of the name however. Ms. Charmaine Taylor/ Taylor Publishing PO Box 375, Cutten CA 95534 707-441-1632 books at dirtcheapbuilder.com http://www.dirtcheapbuilder.com http://www.papercrete.com