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OfflineNoSpeakCanadiano
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Pressure Cooker was mostly dry. How much water do I need?
    #26696662 - 05/26/20 10:11 AM (3 years, 7 months ago)

So I was pressure sterilizing some jars in my Presto Canner. And I put some jar lids and then the rack. Then 4 quart jars of WBS. I ran the pressure cooker for an hour and realised not as much steam was coming out. So I stopped it. I opened it up and it was almost completely dry. Steam was escaping and there was condensation on the foil of the jars. But it didn't appear to be much if any water at the bottom.

https://imgur.com/a/c0nCjrv

Here are pics of the canner. It appears just fine to me as I don't think I ran it completely dry. And turned it off when I noticed not as much steam.

A big question is, how much water do I need to put in to last 1.5 hours (90 minutes)? I thought by elevating the platform on jar lids it would last. I also have 1/2 Pint wide mouths I can use to prop it up if needed.

I am new to using the PC. But I made agar for 40 minutes with it at 15PSI. I didn't use the jar lids and it was just fine.


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OfflineA.k.aM
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano] * 1
    #26696676 - 05/26/20 10:18 AM (3 years, 7 months ago)

With my presto 23qt

It says 3-4 quarts of water.

I recently discovered that if you leave it venting for too long tons of water gets evaporated out, but otherwise it’s fine.

I usually just make sure it’s at least two inches of water.


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OfflineGruffaloCrumble
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano] * 1
    #26696682 - 05/26/20 10:22 AM (3 years, 7 months ago)

Are you turning the temp down once it reaches pressure?
Could be blowing the water vapour out too fast if the temp is left high.
I've done that and rounded a PC.  :frown:


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OfflineNoSpeakCanadiano
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: A.k.a]
    #26696692 - 05/26/20 10:26 AM (3 years, 7 months ago)

Quote:

GruffaloCrumble said:
Are you turning the temp down once it reaches pressure?
Could be blowing the water vapour out too fast if the temp is left high.
I've done that and rounded a PC.  :frown:




I usually put it to medium/low so it maintains around 15PSI. But it's still usually blowing steam. When you put the Canner on its side it does not look warped. But when placed down it does rock slightly. I'm not sure if it was just like that already, or that was due to my mistake.

Also no one has those canners right now near me and Amazon doesn't either. I have some WBS hydrating rn and idk what to do :confused:

Quote:

A.k.a said:
With my presto 23qt

It says 3-4 quarts of water.

I recently discovered that if you leave it venting for too long tons of water gets evaporated out, but otherwise it’s fine.

I usually just make sure it’s at least two inches of water.




Is the bottom of yours completely flat? Or is it slightly rounded and rocks slightly?


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OfflineGan
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696697 - 05/26/20 10:28 AM (3 years, 7 months ago)

If A.k.a. is talking about the Presto 23qt PC that most, including myself, have around here it should be flat on the bottom (or at least mine is). If it's not, it may have warped a bit from running it dry.


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OfflineGruffaloCrumble
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696716 - 05/26/20 10:36 AM (3 years, 7 months ago)

Mine rocks slightly now, but it still works ok.  As long as the seal is good and you get enough contact with the burner it should work.
Yeah those canners are hard to find right now.  I've seen a couple used ones on ebay, but the price doesn't look that much better than a new one.


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OfflineNoSpeakCanadiano
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: GruffaloCrumble]
    #26696739 - 05/26/20 10:45 AM (3 years, 7 months ago)

Quote:

GruffaloCrumble said:
Mine rocks slightly now, but it still works ok.  As long as the seal is good and you get enough contact with the burner it should work.
Yeah those canners are hard to find right now.  I've seen a couple used ones on ebay, but the price doesn't look that much better than a new one.




It appears mostly fine to me. So I'll test it out and keep a close eye on it. Another question. How would how would I make sure it doesn't dry out again?


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OfflineGan
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696748 - 05/26/20 10:47 AM (3 years, 7 months ago)

How long are you letting it vent for?


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OfflineNoSpeakCanadiano
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: Gan]
    #26696756 - 05/26/20 10:50 AM (3 years, 7 months ago)

Quote:

Gan said:
How long are you letting it vent for?




Not certain what that means. The part with top pops up pretty quickly. Then the weight let's steam out the whole time


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OfflineGan
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696766 - 05/26/20 10:54 AM (3 years, 7 months ago)

https://www.shroomery.org/forums/showflat.php/Number/24180711/vc/1#24180711 Check out that link for an explanation of what venting is and why it's absolutely necessary. Essentially, it's the time that you let the pressure cooker spit out steam before putting the weight on to allow trapped air to evacuate your PC.


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OfflineNoSpeakCanadiano
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: Gan]
    #26696808 - 05/26/20 11:09 AM (3 years, 7 months ago)

Quote:

Gan said:
https://www.shroomery.org/forums/showflat.php/Number/24180711/vc/1#24180711 Check out that link for an explanation of what venting is and why it's absolutely necessary. Essentially, it's the time that you let the pressure cooker spit out steam before putting the weight on to allow trapped air to evacuate your PC.




It says to fill up the water halfway up the jars. I was under the assumption that jars should not touch the water


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OfflineGan
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696814 - 05/26/20 11:11 AM (3 years, 7 months ago)

It's not a problem if the water touches the jars. As long as it's not too far up on the jars.


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OfflineInfraredRick
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696880 - 05/26/20 11:49 AM (3 years, 7 months ago)

So, to toggle the solution together....

Presto 23qt wants about 3.5qts of HOT water plus 2tbs white vinegar (cleans the jars' exterior) at 15psi for 90 mins for 9qt jars of oats. Place jars on trivet. Start the heat at medium high. Once steam starts don't vent the pc for very long. I never vent, myself, just wait for the 15psi at which point the noisy rocking starts and I start the timer for 90mins and reduce heat to medium low. At 90mins shut off the heat and wait till the pot is room temp to open. There will be about 1.5qt of water left.

You should pay attention to my advice because I'm an expert. See, I ruined THREE Presto 23qt pots by 1) starting with cold water and highest heat, 2) starting with way too little water, i.e., 2qts, and 3) starting with 3qts of hot water, venting steam for like 15 mins and keeping the temp on high. In each instance my mistakes warped the bottom of the pc.


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Inspiration move me brightly.[gradient:#C7C7D4,#CFD4C7]y[/gradient]


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OfflineSockadin
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: InfraredRick]
    #26696887 - 05/26/20 11:53 AM (3 years, 7 months ago)

Ok I think your running the weight to long. Is it slightly rocking or is it rattling? The gauges can be off a bit so with mine I will get it to vent add the weight and turn it down so it maintains 14 on the gauge but really just barely wiggles every 45 seconds.


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InvisibleStrainsfordaze


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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: Sockadin]
    #26696896 - 05/26/20 11:59 AM (3 years, 7 months ago)

The weight should rock periodically. It shouldn’t be rattling nonstop pushing steam. As sockadin said ever 45secs -1mins or so is good.


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OfflineNoSpeakCanadiano
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696925 - 05/26/20 12:13 PM (3 years, 7 months ago)

I think I got it now guys. So I'll do the 3.5qts hot, with vinegar, add a few coins (I weighed 16g) to the rattler. And making sure it's rattling only every 45 seconds to a minute.

Before I just assumed it rattled the whole time


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InvisibleStrainsfordaze


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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696933 - 05/26/20 12:18 PM (3 years, 7 months ago)

well if you are going to put the coins on it, it wont rattle anymore if ran at the appropriate temp.
put the coins on the weight.
let the PC vent off for 5-10 mins put the weight on and let it sit above 15... no more noise and way less water loss.


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OfflineSockadin
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696934 - 05/26/20 12:18 PM (3 years, 7 months ago)

Just keep in mind you don't need the coins. Most PC's gauge at 15 and they are actually at 16. So 14 is the money spot. Little rattle everyone and again. But violently shaking constantly and your gonna lose all your water.


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OfflineA.k.aM
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: Sockadin]
    #26696944 - 05/26/20 12:23 PM (3 years, 7 months ago)

That’s what surprised me was how quickly the water dries up when steam is getting out.


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OfflineNoSpeakCanadiano
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: NoSpeakCanadiano]
    #26696970 - 05/26/20 12:33 PM (3 years, 7 months ago)

Also I should leave the rattler off for 10 minutes after steam starts escaping then plop it on?


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InvisibleRoger Clemency
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: Strainsfordaze]
    #26696973 - 05/26/20 12:34 PM (3 years, 7 months ago)

Definitely check out the link someone posted earlier. I use the presto 23qt. 3 quarters taped to the weight.

Vent for 5-10 min and then out the weight on. The weight is made to rock at 15 psi so if you put that extra weight on you will be able to hold 15-17 or so the entire time with the weight only occasionally rocking and it will be very quiet and you’ll loose little water.

For my stove I heat it around medium and slowly increase until I’m getting good steam, never all the way on high for me, then I put the weight on and slowly turn it down. Wait a minute and then turn it down some more. I work my way down below medium until I find where the pressure starts to drop from around 17 towards 15 then I’ll get it stabilized there and if it doesn’t change for 10 min I’ll stop checking basically until the timer goes.

Edit - many responses while I was typing :smile: but yeah let it vent for sure. It’s the safe way


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OfflineA.k.aM
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: Roger Clemency]
    #26696993 - 05/26/20 12:45 PM (3 years, 7 months ago)

I didn’t know about venting when I got into cult either.

Turns out you need to give it time to push all the air out and replace it with steam or the temperature won’t be consistent.


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OfflineInfraredRick
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Re: Pressure Cooker was mostly dry. How much water do I need? [Re: A.k.a]
    #26701494 - 05/28/20 10:40 AM (3 years, 7 months ago)

Ok, well my method has saved me from ruining yet another pc. I'll change to vent for a bit before placing the rocker because that sounds good. But I still have 1.5qt water left after 90 mins of noisy, so I'll prol maintain that piece, the pressure never reads above 17, so let it rock. I don't think filling the pc with more than 3.5qt of hot water is a good idea, wouldn't that result in the bottom third of the jar not recieving the steam treatment?

I'm still learning! Thanks to everyone.


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Inspiration move me brightly.[gradient:#C7C7D4,#CFD4C7]y[/gradient]


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