Earlier this week Stephen and Chris met up with Alex at his mushroom farm in Bellingham, Washington. The reason for the trek up Interstate 5 was to document how to repurpose a cubic yard of spent coffee grounds (collected from coffee shops in Seattle) into a grow medium for growing gourmet oyster mushrooms!
First we dumped all the coffee grounds collected over a five day period into the bucket of the bobcat. Which is Alex's favorite toy on the farm.
Next the grounds were loaded into the commercial mixer. A bit of water was added to keep the grounds moist. Also added to the mix was 35% sawdust and 5% grain
Out comes the mixture into bags, which are neatly folded and placed on the pasteurization rack.
Once loaded (about 225 bags) the rack is pushed into the pasteurizer to sterilize the coffee grounds.
On Tuesday we head back to learn all about the next step, inoculation!