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https://uproxx.com/life/diy-magic-mushrooms-uncle-ben/
There's a subreddit for just about everything, but if you're a legit Uncle Ben's fan who is also a serious Redditor (that's a lonely island), you might be disappointed to find that the subreddit r/UncleBens isn't so much a gathering of hardcore pre-cooked rice fans, as it is an online sub-community of DIY psilocybin cultivators who are using Uncle Ben's and other supermarket staples to grow magic mushrooms.
[...] What makes Uncle Bens the perfect vessel for psilocybin, according to the r/UncleBens crew, is that mushroom cultivation "requires a sterile, nutrient-rich environment in which their spores can grow," and since Uncle Ben's rice is pre-cooked, sterilized and vacuum-sealed, it provides the necessary environment for cultivation.
(Score: 2) by c0lo on Saturday July 04 2020, @10:15PM
Those won't eat cellulose (but will gobble starches).
It's the molds that you need to keep away for the entire lifecycle - from mycellium development stage all the way to fruiting - after all, those are fungi themselves [wikipedia.org]
https://www.youtube.com/watch?v=aoFiw2jMy-0