After failing to produce mushrooms due to lack of a P/C im trying to discover a new way to sterilise, I believe it should be possible to sterilise within an oven so im going to make a casing.
1/2'' layer of moist - wet vermiculite 2'' layer of substrate
place in a hot oven whilst u fill up a spray bottle with boiled water to keep moister levels optimum. keep checking to make sure substrate has not completely dried out and spray to top it back up, after maybe 30 mins to an hour remove from oven and add casing layer.
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