Comment by jcims

It's a bit of trouble but not onerous. I'm temporarily relocated for about a year and haven't restarted b/c I don't have all the equipment here with me, but will likely restart here before long.

There are some sterile procedures you need to follow, pretty easy.

You need sterilized/pasteurized grain spawn and substrate. You can just buy those from a vendor (eg North Spore) to start. (Once you DIY it though it's much cheaper) Biggest challenge is getting

You need spores. You can order those online (syringes are the way to go to start). Once you know how to culture them you can easily get them anywhere. Put a mushroom cap on a piece of aluminum foil and let it sit for a week. Pick it up and there are your spores.

Takes 2-3 months end to end for any particular batch.