For all the people that pmed me asking me how to do this I wrote up a quick explanation.
The first thing you need to do is to get your supplies gathered up.
You are going to need
Rye grain, or wild bird seed.
a pressure cooker
1 quart canning jars
tyvek envalopes or tyvek house wrapping
medium or fine grade vermiculite
12-18 gallon "or something close" rubbermaid tub, clear
fish tank air pump with air stone
some all purpose glue
a small plastic cup
high temp gasket silicone
polyfill pillow stuffing
The first thing you do is soak your grain for 24 hours in room temp water.
This will germinate all the bacteria so you can kill it with your pressure cooker.
Next drain and rinse the soaked grain, then put in a large pot of new water that has been brought to a boil, then heat reduced to a simmer after the grain is dropped in.
Simmer for five minutes, then put into a strainer, allowing it to steam in the open air.
This simmering will not kill all the bacteria, so yes we must STILL pressure cook.
Leave steaming in the strainer until all visable water has drained away.
All the moisture you need will be contained in the kernals themselves.
Note** wild bird seed takes less time than rye grain. Just drop it into the boiling water, reduce heat, and pour into strain about a minute later.
Now that you have simmered, but well drained grain, load into your jars so they are half to 3/4 full. Don't overfill them as they will compact after pressure cooking and expand not leaving you any room shake them up later.
Before fixing the lids, poke one hole the size of a pencil in the center of each lid and a couple smaller holes around that one.
then cut a circle of tyvek the same size as the lid. Place a couple drops of silicone on the top of the lid disk with holes in it, and fix the tyvek circle on top of that.
In the center of the tyvek, where the large hole is in the metal jar lid disc, place a large glob of silicone. This will act as a self healing port to later inject with a spore syringe.
Once dried place your tyvek/silicone lids on your grain jars, cover each lid with a piece of tin foil, and load them into the pressure cooker.
Be sure to read the pressure cooking directions as they are all different.
Pressure cook the jars for 90 minutes at 15 psi.
Once cooled to the touch "the next day usually" you can innoculate with a spore syringe from a trusted vendor. I personally have always used spores101.com. They are very reliable and have fast shipping, and real people to talk to if you need something.
Once you use a bit of spore solution "1cc per jar" for the first few jars to get started, you can just use colonized grain from one jar to infect many, many other jars. "More on this later"
Once your jars are innoculated with spores or live tissure incubate them in a constant 80 degree, dark place. A week to three weeks later you should see your first signs of growth. Once your jars are colonized, meaning they have turned totally white, with no signs of uncolonized grain left, you are ready to spawn.
Take your vermiculite and moisten to field capacity which means if you squeeze a handful as hard as you can, only a drop or two should come out, nothing more.
Once moistened, Seal in a glad oven bag and bake for 2 hours at 300 degrees, sealed shut.
Or you can load into jars and pressure cook for 30 minutes.
You will want 1/4 grain to verm ratio meaning 1/4 grain, 3/4 verm.
When you have all your verm baked or pressure cooked, then cooled to room temp, simply mix them up in a new, clean garbage bag. "garbage bags are sterile until open to the air"
Now you will need to get your rubbermaid tub ready for fruiting.
Use your glue to fix a plastic cup to the side of the tub on the inside.
Then cut a couple large holes on the side of the tub "use a hot knife or it will crack"
Stuff the holes closed with polyfill pillow stuffing.
Once the glue is dry fill the cup with distilled water, and drop your air stone into the cup so that it bubbles without spilling over the edge. This will keep the tub humid enough to fruit your cased spawn.
Place the bag into your rubber maid tub, and flatten the top so that it is nice and evenly sitting in the bottom of the tub.
Let sit in 70-80 degees for about 8-10 more days until it turns totally white, then cut the garbage bag top off so the flat later of spawn is now exposed to the inside of the tube.
Turn on the pump, and bubble away.
In 6 to 15 days you will see pins,
then mushrooms!
I hope that helps explain it. This is the easiest method I have ever found.
