This is freaking stupid. Sorry, guy, but why get one dose out of 300g of spawn when it could make 30 doses? PER FLUSH?! Spawn run to fruit, no more than 3 weeks- average is two. For LESS effort, in the SAME amount of time, you can aquire 30x more usable biomass.
Keep it simple. Spawn to straw at .03 cents a pound.
Trying to extract actives from myc. is a waste of time. You will only get a tiny bit of myc from each jar and it will have very low potency.
You can grow invitro PF jars just as easily and actually end up with mushrooms, not this poor substitute.
Liquid cultures range from zero to about .5% psilocybin. Actual mushrooms range from around .75% to 2.0%.
So you will only end up with a tiny bit of end product and it will be well less than a third as potent as actually growing mushrooms. It's an incredible waste of time, materials, and energy.
Even growing PF jars in vitro would be many times more effective in terms of labor, materials, and end product.
We really need to delete bogus guides like this from the shroomery so that people aren't led astray. -FF
References...
Variation of psilocybin and psilocin levels with repeated flushes (harvests) of mature sporocarps of Psilocybe cubensis (Earle) Singer.J Ethnopharmacol. 1982 May;5(3):287-91.Bigwood J, Beug MW.
Relationship of Carbon and Nitrogen Nutrition of Psilocybe baeocystis to the Production of Psilocybin and its AnalogsA. Y. Leung and A. G. Paul
The Production of Psilocybin in Submerged Culture by Psilocybe cubensisPhilip Catalfomo and V. E. Tyler, Jr.Lloydia vol. 27