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Amazon Shop: ½ Pint Jars, Agar, Autoclave, Brown Rice Flour, Pressure Cooker

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Offlinebigj2
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Registered: 03/23/03
Posts: 55
Last seen: 14 years, 5 months
Pressure Cooking Jars
    #1483314 - 04/22/03 07:28 PM (14 years, 7 months ago)

After my Jars have been in the cooker at 15 psi for an hour, Should I take the cooker off of the stove and let the pressure return to zero on its own, or should I exaust the steam? I heard exausting the cooker will dry out the jars. On ther other hand, it will take the cooker a long time to return to zero pressure on its own. Will this cook the grain for too long? Thanks.


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Anonymous

Re: Pressure Cooking Jars [Re: bigj2]
    #1483325 - 04/22/03 07:31 PM (14 years, 7 months ago)

I have always let my cooker cool on its own...never had a problem with overcooked grains.


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InvisibleRoadkillM
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Re: Pressure Cooking Jars [Re: bigj2]
    #1483341 - 04/22/03 07:35 PM (14 years, 7 months ago)

Just take the pressure cooker off of the stove and let the pressure return to zero on its own.

Do not exaust the steam!!!

Wait about an hour after the pressure has gone down before opening it.
Then shake your grain...if you are doing grain.

It won't cook it too long...you will be fine.

good luck!



--------------------
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You wouldn't know what crazy was if Charles Manson was eating froot loops on your front porch!


Brainiac said:
PM the names with on there names, that means they have mushrooms for sale.



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OfflinePDU
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Re: Pressure Cooking Jars [Re: Roadkill]
    #1483431 - 04/22/03 07:57 PM (14 years, 7 months ago)

Why not exhaust the steam? I always have.


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OfflineAmanita_Dreamer
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Re: Pressure Cooking Jars [Re: PDU]
    #1483444 - 04/22/03 08:01 PM (14 years, 7 months ago)

I'm sooooo impatient that i'll acually take the pc and set it on my cool porch (still closed)in front of an industrial fan at fall bore and then exhaust the steam.


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InvisibleDiploidM
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Re: Pressure Cooking Jars [Re: PDU]
    #1483583 - 04/22/03 08:44 PM (14 years, 7 months ago)

Quote:

Why not exhaust the steam? I always have.





If you vent the steam, the water in your jars which is at 250F will start to boil rapidly. This will tend to leave your substrate on the dry side. Rapid cooling can also lead to cracked jars.

-Diploid


--------------------
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1) You can't get married to your spouse who is the same sex as you.
2) You can't have an abortion no matter how much you don't want a child.
3) You can't have a certain plant in your possession or you'll get locked up with a rapist and a murderer.

4) We need a smaller, less-intrusive government.


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Offlinekindkesey
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Re: Pressure Cooking Jars [Re: Diploid]
    #1483623 - 04/22/03 08:57 PM (14 years, 7 months ago)







If you vent the steam, the water in your jars which is at 250F will start to boil rapidly. This will tend to leave your substrate on the dry side. Rapid cooling can also lead to cracked jars.

-Diploid





Is this true? The hippie has alway vented the steam from his pc, and hasent had a problem yet.


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OfflineAmanita_Dreamer
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Re: Pressure Cooking Jars [Re: kindkesey]
    #1483694 - 04/22/03 09:13 PM (14 years, 7 months ago)

only cracked i half pint jar so far and my corn works great!


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OfflineNoLogos
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Re: Pressure Cooking Jars [Re: Amanita_Dreamer]
    #1483758 - 04/22/03 09:27 PM (14 years, 7 months ago)

It will probably work with grain and BRF, but if there is any liquid media in the PC let it cool naturally and don't vent the steam! Otherwise it will boil over and make a mess inside the PC.


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Invisibledog
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Re: Pressure Cooking Jars [Re: NoLogos]
    #1484092 - 04/22/03 10:32 PM (14 years, 7 months ago)

Quote:

don't vent the steam! Otherwise it will boil over and make a mess



No shit. The first time my friend PC'd agar he vented the hot steam too quickly. When he opened it afterwards, he found that the agar had blown all over the inside of the PC. What a fucking mess.


--------------------


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Invisiblecheesenoonions
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Re: Pressure Cooking Jars [Re: dog]
    #1484247 - 04/22/03 11:03 PM (14 years, 7 months ago)

Yup, industrial autoclaves have different settings for autoclaving liquids where the steam is vented slower.


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Offlinekb73
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Re: Pressure Cooking Jars [Re: kindkesey]
    #1484297 - 04/22/03 11:14 PM (14 years, 7 months ago)

I always vented and never had a problem.


--------------------
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OfflinePerk
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Registered: 04/07/03
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Re: Pressure Cooking Jars [Re: kb73]
    #1484332 - 04/22/03 11:22 PM (14 years, 7 months ago)

Don't quite understand what all the rush is for...you gotta let the substrate cool before you innoculate anyway.


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OfflineJohnnyRespect
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Re: Pressure Cooking Jars [Re: Perk]
    #1484612 - 04/23/03 12:54 AM (14 years, 7 months ago)

Greets,
I've heard alot about high sterilization times overocoking the grains.  I expose my jars to the sterilant parameters of 20psi for one hour and thirty minutes. My little white ropes always develop quite nicely :smile:  I'd rather do slight overkill and make sure it works than not do it enough.  Also, I worked in a hospital OR for quite a while sterilizing instruments for the OR, we used devices called "sterility integrators".  These went into every single pack we  wrapped and sterilized, they showed clearly if the indicator was exposed to conditions that guarantee sterility (could be from 200 degrees at 10 minutes at 15 psi to 270 degrees 40 psi for four minutes, the 270/40/4 is standard for most operating room equipment). I've used these indicators in grain jars before that were prepared exactly as if I was going to innoculate themm, 15 psi for 10 minutes did not cause a change that would be considered acceptable for use in a hospital OR.  Of course, thats OSHA, CAAP and NAMSI bullshit regulations that are probably overkill, and surgery requires a degree of sterility that shroomering doesn't, but it's nice to know that my PC can do what our autoclaves can


pZ

jOhnny R


--------------------
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InvisibleDiploidM
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Re: Pressure Cooking Jars [Re: kindkesey]
    #1485424 - 04/23/03 10:12 AM (14 years, 7 months ago)

Quote:

The hippie has alway vented the steam from his pc, and hasent had a problem yet. 




Some people get good results venting, however, if you look in your jars after a rapid venting, you'll find that they're boiling inside just like rapidly-vented agar.  This tends to dry out your substrate.  If you started with a little extra water, then the end result may be optimal water content and that may be what Hippie and others are experiencing.

I figure it's harder to over-water your substrate in the hopes that the imprecise boiling after venting will leave you with the correct water content than it is to start with the correct water content and vent slowly to prevent boiling.

And again, while some people seem to have no problems venting, doing so increases the likelihood of a jar cracking.  Having a hot jar break apart when you're shaking after PCing is not fun, let me tell ya!  :tongue:

-Diploid

 


--------------------
Republican Values:

1) You can't get married to your spouse who is the same sex as you.
2) You can't have an abortion no matter how much you don't want a child.
3) You can't have a certain plant in your possession or you'll get locked up with a rapist and a murderer.

4) We need a smaller, less-intrusive government.


Post Extras: Print Post  Remind Me! Notify Moderator
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Amazon Shop: ½ Pint Jars, Agar, Autoclave, Brown Rice Flour, Pressure Cooker

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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