In the pot where I grow my little Meyer Lemon tree, I found surprising little guests: white mushrooms of an unidentified variety. (I have no plans to eat these. If I don't know what they are, I'm not running the risks.

) I have a biochar mix in there (topsoil, biochar, and coffee grounds), and the mushrooms seem to be popping up all over, especially after I watered the lemon tree with a dilute mixture of blackstrap molasses. I think you'll find fungi love the stuff. Biochar seems to accelerate the spread and growth of them.
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Teach a Wall Street banker how to build a fire and he'll be warm for the night. Set a Wall Street banker on fire and he'll be warm for the rest of his life.
Logic
The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.
--Ambrose Bierce,
The Devil's Dictionary