jay, my process is mostly similar to yours, although I don't find the pressure cooker completely neccesary. When I'm sterilizing substrates I simply put the jars in a pot (2 pots, 6 jars in each pot) filled about halfway up with water and several small holes to release pressure when I bring it to a boil. After several the substrate is sterilized and cooled, ready for spores...

i purchase all my equiptment from everyonedoesit.com :thumbsup: