This tek is a documentation of the process i've used successfully for about three years now. I call it methods of madness because the way i do things would be considered mad by all conventional mycology wisdom. Process One: Grain Prep For me, grain prep is simple and easy. I just add WBS and water to the jars and PC. Quart jars: 400 ml WBS 200 ml tap water Pint jars: 200 ml WBS 100 ml tap water Step One: Add the measured grain and water to the jars. Step Two: Seal the jars with the filtered lid of your choice, i use Poly Fil, and then i cover them with tin foil. it took me about twenty five mins. to make all these jars, and that is including the time it took to make each poly fil lid. Step Three: Pressure cook the jars for 90-120 mins. at 15 p.s.i., or 2.5 hours at 10 p.s.i. Step Four: As soon as the pressure drops in the PC remove each jar and shake it until the clump breaks up and the grain is nice an fluffy looking. Let the jars cool. Step Five: When you are ready to inoculate give the jars another shake and noc up as you would any other. Clean inoculant is the most important thing, a dirty syringe or LC will give you contaminated grain. Because of this i strongly recommend using agar to get clean inoculant first. Step Six: Wait. Process Two: Bulk Substrate Prep For bulk substrate I use horse or cow manure and/or hay. This is where it gets really weird, i'll be sterilizing the bulk sub instead of pasteurizing. I know, I know, sterile poo is useless right? Wrong, sterile poo works just fine for cubensis, and oysters as well. Some species it's said won't grow without the microbes, but cubes aren't one of em i assure you. Process Two Important Notes: Sterile poo will contaminate if you expose it to open air, which makes this method not so great for doing monotubs, unless you can fit your entire tub in your pc. I have never used open air to spawn in, maybe it works maybe it doesn't but i've always erred on the side of caution on this point and do all spawning in a still air box. I also use bags almost exclusively now for bulk as they are easy to pc with the poo inside, so that the bag and all is sterile, at least on the inside where it counts. For the hobby size grower this method is nice and easy and gives results equal to pasteurizing. Step One: Mix your poo or hay or whatever you use with water and bring it to field capacity, i do this by filling the poo bag with water and letting it soak a little bit, then i squish all the extra water out by squeezing the bag until not much water is running out. Give a handful a final squeeze to ensure it's at field capacity. Now roll the bags up and tie them with something, twine works well or zip ties. I like to then wrap each bag in tin foil if i have it, this time i didn't so i used newspapers. You can also use an old t-shirt, just whatever you have to keep the bags from touching the sides or bottom of the pc. I don't know if the bags will melt on the sides of the pc again i err on the side of caution here. Step Two: Place your bags in the PC and cook for 2 hours or more at 15 p.s.i. or 3 or more hours at 10 p.s.i. When the bags are done cooking i wrap them in a towel and put them in the freezer until they are cool enough to spawn. Alternately you can let them cool anywhere really, even just leaving them in the pc. I have a sixteen quart pc and i can fit four to five bags with four quarts of sub in each. Step Three: In your still air box or in front of a flow hood add about a pint of grain spawn to each bag, you can spawn a heavier ratio if you want but i have found one pint of grain will inoculate four quarts of poo rather nicely. After spawning tie your bags closed and wait for colonization. Step Four: Wait. Results: These are some old pics i had taken on my phone and some on a camera, all the substrates in the pics are sterilized, the ones from this thread were just inoculated the other day so they aren't ready yet. Thanks for viewing my tek, please feel free to ask any q's or make suggestions in this thread. Thanks goes to Dr. Jugglz for bringing this grain method to light years back. And a much bigger, huger thanks to the Myco-Tek community for giving me a place to post this. If i forgot anything i'll update the OP if needed.