Keeping Coffee Grounds Mold Free

Coffee is an excellent "substrate" material to use for growing your own mushrooms.  This is something with which I've had some tenantive success, when I worked in an office from which I could frequently nab bulk enough stocks of used coffee grounds on a daily basis.  Now I work from home, my supply chain is limited again. So it goes

You need a decent amount of coffee grounds to mix with your sterilised cardboard, so while building up to that from my own supplies, I have to keep the stocks sterilised and mold free.  I'm doing this inside a half-gallon mason jar to which I add my grounds each time they're ready (usually straight after I've had my coffee - no point leaving them exposed to the air any longer than that, as it only increases the risk of mold developing).

Each time I open the lid and add my coffee grounds, I'm spraying the inside with isoproyl alcohol and pouring boiling water straight from the kettle over the whole thing before screwing back on.  It's been a few weeks now, but things are looking adequate.
 




Related posts

Drying Oyster Mushrooms

Imaginary Forest Library

Mushrooms from Coffee Grounds

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