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Elite Member
thanks for share, interesting
I have used sawdust. If you don't wax, little critters eat the sawdust, or it can become infected with other spores or bacterias that can overcome the strain you want.
A hundred years ago, the Chinese and Japanese would put the logs in a pool with the spawn and hit the oak bark with hammers or cut it with saws to allow the spawn to enter the logs. There was no control of what strain might enter the log that way so it is not a popular method today.
Shiitake Lore