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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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pressure cooker problem
    #397363 -

I was just wondering in the birdseed/finch seed tek (im not sure if that is what the tek is exactly called). it states that you need to put the jars with micron magic disks in a pressure cooker at 15 psi for 45 minutes. My problem is that my pressure cooker does not have a psi gauge and i havent been able to find one in my local store (all come in readings like low, medium, or high) how important is it that i do not go over/under 15 psi? will it dry out the jars or raise the chance of contamination?


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Re: pressure cooker problem [Re: pauledangerously]
    #397364 -

Post Deleted a la Obscurity

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Re: pressure cooker problem [Re: pauledangerously]
    #397394 -

over 15 psi could raise the temp in the pressure cooker too much- causing the disks to become brittle and/or melt. (if they melt under high temps- id pm nushroom and ask him). under youd get understerilization, 250 degrees is the "magic" temp when almost all nasties are killed, as opposed to 212 (boiling water) which gets some but not all (esp the nasties in grains/seeds). understerilization at a lower psi/temp would put you in between that temp range.

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? oscill8 2001, 2002
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Re: pressure cooker problem [Re: oscill8]
    #397414 -

LOW =5psi
MED = 10psi
HIGH = 15psi
Im almost certain on this, what does the peice that goes on top of the cooker look like?

The only thing you have to fear is, fear itself...


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The only thing you have to fear is, fear itself...

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Re: pressure cooker problem [Re: TreeofLife]
    #397744 -

the piece has a red dial. actually i dont think it says low, med, high. it says 1, and then 2. so basically the highest rating would be 2.


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Re: pressure cooker problem [Re: oscill8]
    #397756 -

oscill8: i thought the disk was supposed to make a seal around the jar, isnt that the disk melting?


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Re: pressure cooker problem [Re: oscill8]
    #397842 -

Is there absolutely no way of sterilizing bird seed in a pot of water?  My proble is that I want to try that tek, but I don't have  P. cooker and wont be able to get one for a while (I am so broke it's not even funny, in debt in all truth).  Are we sure that the nasties in bird seed cannot be sterilized in water, or are we taking some person's word for it without seeing for ourselves.  I am going to try it with a jar any way, I just wont innoculate.

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I admit it, Im a fungal-feliac :wink:
Support the FSR!

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Re: pressure cooker problem [Re: pyromaniac]
    #397848 -

Post Deleted a la Obscurity

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Re: pressure cooker problem [Re: pauledangerously]
    #397885 -

paul- the disk doesnt seal to the jar, it can be lifted off. its held on by the metal band normally used in canning jars, replacing the regular metal lids with just the disk. it should not melt, as they are reusable. they were pc'd at 15 psi for 30 min (only doing pf jars that time) and HQ had no problem with the disks cracking or melting. they look reusable as well, but she wont be able to tell til birth.

pyro- good luck with the boiling, let us know how it goes. the reason pressure cookers are vital is because they can reach that special number im so in love with lately, 250 degrees. this is the temperature that specific bacteria and nasties can survive up to, including botulism (you learn a lot reading those damn pressure canner manuals). the boiling may work if the substrate you were going to work with were not so "tough" (steaming only means its hard to penetrate the intact seed/grain)... why brf flour works in a waterbath. do a search on the web for pressure cookers and the national guidelines regarding what the high temps kill and what boiling water doesnt. its kinda interesting, but kinda yucky too. im not trying to stop you from boiling, but just passing on the little stuff behind pressure cooker reasoning.

***Please Donate Blood. American Red Cross***


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? oscill8 2001, 2002
"Any data submitted to Shroomery.org becomes our property"

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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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