Yes.. pressure canner/cooker is the same thing. Although not to be confused with pressure sterilizer like Fungi Perfecti sells.Merck Trip: As for your post above that PF did a survey that mushrooms grown on rice are more potent then grown on birdseed. BULLSHIT.
I've done studies of my own as have friends, and we all conclude just the opposite.
But then again.. this is not any scientific proof, just our own experiments and observations.
There are a lot more nutriants and a higher nutritional value in grains such as millet and rye then in rice. Its outlined in Stamets book TMC.
Could you live on rice alone? yes.. you could, but you would be starving and not as healthy as if someone fed you a variety of grains with other nutriants in it, such as grains used in birdseed. Apply that same thought to the mushrooms. Give them more of a variety of grains and nutriants, and they'll grow healthier.
-peace-