If one can follow in detail some very careful steps in starting up mushroom growing especially on a farm and even more so on a farm with permaculture as part of its design, you can feed a whole bunch of people using what you may otherwise throw away. While growing mushrooms the left overs from the production become some of the best compost and soil producer on earth. It may be a science to know too much but you may regulate how much and what you need to know.
We encountered a great set of videos that are the best introduction to general mushroom knowledge based on a community/collective farm in New Hampshire called D-Acres dacres.org which is among the best community projects we have encountered in this English speaking universe. We hope you find the videos informative and get you started on something
https://youtu.be/y8sm1uDPWj8
