I started portabella spores and I'm experimenting a bit. I have spores in coffee grounds as well. (chinese plastic take out containers work great!)I tried growing mushrooms like 3 months ago (i'm still waiting for them to do something..LOL) and they aren't growing. I don't know what I did wrong. I may try again soon. I was trying to grow portabella.
I love the "If it doesn't stink method! LOL!!"
What are you using as a substrate?