what dose mushroom mulch consist off?

what is in mushroom mulch is it cow mannure

Answers:
Uhhhhhh no its mushrooms...what are you stupid or something?! why would they call it mushroom mulch?! Damn you are stupid!

Other answers:
i watched dirty jobs on discovery and they use horse sh*t horse p*ss urea and hay
i watched dirty jobs on discovery and they use horse sh*t horse p*ss urea and hay
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