"The o kid base the new material ' malt ceramics ' of Asahi ecology is the shrubbery material for the orchid which is used. (During patent applying)
Because we use 100% natural material which designates the beer barley shell as the main component, the harmful component is not included in the root of the plant kindly."
This stuff reminds me of granitic gravel that can be purchased in bags at home improvement centers in the section that displays concrete, cement, etc.
But from the above description it may be a manufactured ceramic product. There is a site that imports Japanese bonsai pots, perhaps they may know-
I know I have the link somewhere:crazy:
The Japanese are famous for their gravel culture of orchids.