I built him a large building out of block and one small part was a hay steaming room.
He would put a bale or two of hay in this sealed room and had it rigged to heat the hay to
sterility with steam.
Once clean, he transferred the hay to several bins and sprinkled them with spores.
The thing he liked about growing 'shrooms was that they appeared overnight and had no
lengthy growing period, like pot.
He was a mushroom master, traveling to the forests in Northern Az when it rained and picking
shittakes. Then he drove to the high class restaurants in Phoenix and Tucson and sold them to the chefs.
I just saw him yesterday after all these years.....