5-6 lb Grain Spawn Bag

5-6 lb Grain Spawn Bag (per bag)


Soak in hot water in a sanitary pail for 12 hours (overnight)

1400g grain (Soft wheat kernels or hard wheat kernels or rye kernels or wild birdseed)

1/2 tsp CaCO3 (calcium carbonate, calcitic lime)

1 Tbl CaS (Gypsum)

3 L hot water

pour into a strainer and let drain till flow of water is almost stopped

Optional:  put 1/4 cup dry Hardwood fuel pellets (HWFP) into each bag (14A or 14T type bag)

scoop drained mixture evenly into 14A/14T bags, roll down to filter patch and clip or stack.

Sterilize for at least 1 hour at 121 C at sea level in a pressure canner/sterilizer, according to the manufacturer's instructions.  Use sterilization indicators to check for sufficient time.  Overpacked cookers or large volumes will require longer times.  During cooling when the pressure is between 0 and 1 psig move the cooker in front of a HEPA filter air source to finish cooling.