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Amazon Shop for: ½ Pint Jars, Pressure Cooker

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OfflineAscension
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quick question on sterelizing
    #4216741 - 05/25/05 01:15 AM (11 years, 6 months ago)

When i boil the pf jars in the pot to sterelize, should the jars be COMPLETLY sealed, like air tight?
because everytime i do this im scared theyll blow open beacuse of the water inside heating up so i poke holes in it.
But if theres holes in it, water always seems to seep in and mess up the ratio.


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Offlineliveby
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Re: quick question on sterelizing [Re: Ascension]
    #4216843 - 05/25/05 01:47 AM (11 years, 6 months ago)

water will start to boil creating pressure , it will blow , dont completly seal


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InvisibleMrMaddHatter
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Re: quick question on sterelizing [Re: Ascension]
    #4216847 - 05/25/05 01:48 AM (11 years, 6 months ago)

You'll want the holes for inoculation, just put some professional grade masking tape over the holes.


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Invisibledeanofmean
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Re: quick question on sterelizing [Re: Ascension]
    #4216927 - 05/25/05 02:09 AM (11 years, 6 months ago)

you need to go back and read the tek again.:kiss:
place the seal upside down, tighten the ring barley snug.


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Offlineblackout
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Re: quick question on sterelizing [Re: deanofmean]
    #4217257 - 05/25/05 04:15 AM (11 years, 6 months ago)

If you are steaming with water then the steam is 100C (under normal atm pressure) so the jar you are heating will never get beyond 100C, if you put in a jar at 150C it would be cooled to 100C too. Your sealed cold jar contents will eventually get to 100C, but will stay there so the pressure build up will be very small. Now if you put a sealed jar in a microwave it will heat and become a pressure cooker and go beyond 100C, build up pressure and explode.

Leaving the cap a bit loose allows for more steam circulation in the jar and probably results in better heating, though the small pressure would also turn it into a pressure cooker.

It would be intersting to make to identical jars, one with a tight cap and one loose. steam for 20mins, take them out and measure the core temp.


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Amazon Shop for: ½ Pint Jars, Pressure Cooker

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