Growing mushrooms in coffee grounds

I am totally hooked on this idea and have been reading about it in the last few days. I was thinking about having a go at growing oyster mushrooms as these are said to be  easier to grow than other types of mushrooms.
I was not looking at buying a kit but growing them from scratch, there is a lot of information on the web on the different methods people use, but I was thinking has anyone on the forum had a go at growing their own mushrooms, I do understand that everything needs to be sterile.
Well has anyone had a go then ? or would you be interested in having a go.

I 'grew' lots of mushrooms as a by product of having 60 bags of mushroom compost delivered. They were fantastic and kept on producing.....

I also tried the dowelling drilled into logs thing - bought them from one of the well known seed catalogues.  Also came to nothing after 2 years of waiting.  In fact, the logs were used for firewood this week - won't be trying that again.

The coffee grounds thing sounds interesting though.  Will have to check it out.

StIMkRDx_MU
If coffee grounds don't work you could try the plug method.

The plugs are interesting but I don't think waiting a year for mushrooms would go down well in our house !
The best way I have seen for growing the myselin was in a petri dish then watering it down and injecting it into the straw or coffee grounds. and then saving a little bit of the myselin and growing it again in a new petri dish,
for the next lot, very cleaver a bit like a ginger beer plant. I must say the kits are quite expensive. I took some mushroom prints the other day and cut up the paper and added it to some compost, we will have to see what happens. I am just going to use one of my propagator's and keep it in the dark it will be nice and warm and humid in there.