The casing ingredients should be mixed in a bowl, then the water should be added.
The casing ingredients should be mixed in a bowl, then the water should be added. The correct water amount is reached, when you take a handful of the casing mix and squeeze it in your hand, not too hard, a few drops of water should come out of it. That's the correct moisture. A pasteurization can be achieved by filling the moist material into a suitable microwave container with a cover and microwaved for 10 minutes at high and stirring it a few times during the microwaving to achieve an uniform heat distribution. A sterilization can be done in a pressure cooker by filling the substrate into autoclavable bags or jars and pressure cooking it for 1 hour. Contrary to popular belief Psilocybe cubensis doesn't need microorganisms in the casing for the mycelium to pin, so sterilization can be used where contamination issues are a problem. After the casing material has cooled down to room temperature it can be applied to the substrate.