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Growing Mushrooms: PF Tek

Step 5Get your jars ready for sterilizing

Get your jars ready for sterilizing
Now close up all your jars, with the rubberside facing upwards (upside down from how they were designed)
Place a square of foil over the lid covering the holes and sealing the jar from contaminants in the air. Crumple it down nice and tight, forming it around the jar lid.

Put about 3 inches of water in your pressure cooker and place as many jars as you can, stacking them if you have to.

I had no problem putting jars directly on the bottom of the cooker, but I have seen people put old canning jar rings in the bottom to help prevent jars from cracking.

READ your pressure cooker's manual if you have it! It can be a dangerous tool if improperly used.
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