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10-17-2010, 10:27 PM
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#1
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Join Date: May 2010
Location: Evanston, Illinois
Posts: 1,168
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Hot spots in Mash tun?!?!
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I was mashing away 10 gallons of Centennial Blonde. After doughing in, my temp was 148 instead of 150. So I took my trusty heat stick and used it to increase the temp to 150 or so. Took a lot longer than I thought, though.
I stirred a bit, then let it mash away. After about half an hour I noticed the temp had risen to 152. I decide to release a bit of heat by stirring.
Well, hot damn, as I stirred the temp soared almost to 160. I used some ice and stirring to bring it back down. It was at 144 before I knew it and I had to use the heat stick again.
I'm wondering if my thermometer is malfunctioning or if I need to do a better job stirring. Things is, I try to be cautious of bumping the thermometer stem too much. It's mounted thru a drilled stopper and I once bumped it and it began leaking and I had to stop and get it seated right again.
So what do you think? Hot spots? Poor stirring? Faulty thermometer?
Can anyone recommend a digital thermometer to me? When I'm trying to really dial in the temp the dial thermometer makes it rough on my eyes.
Hope the beer turns out! 
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On Tap: Surly Furious, Belgian Trippel, Da Yoopers Pale Ale, Chocolate Lager, Wee too Heavy (barrel aged Scottish), Belgian Barrel Aged Barleywine, Simcoe Pale Ale, Galaxy/Nelson Sauvin IIPA, Broken foot Pilsner, Da Yooper's Oatmeal Stout
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10-17-2010, 10:41 PM
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#2
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Join Date: Feb 2010
Location: Lebanon, PA
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definitely not stirring enough.
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10-18-2010, 12:20 AM
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#3
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Join Date: Feb 2006
Location: Wrentham, MA
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Here ya go...
http://www.thermoworks.com/products/thermapen/splashproof_thermapen.html?gclid=CKXtmvaR26QCFeFM5 QodijTMLg
I have used this thermometer for 4 batches now, and I love it!!! And yes, I still have hot spots in my Mash. Stir and stir and stir. You'll still get them.
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10-18-2010, 01:22 AM
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#4
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Join Date: May 2010
Location: Evanston, Illinois
Posts: 1,168
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I like the thermometer, but price is steep for me.
I'm thinking of going RIMS in part because it's damn hard to stir a square mash tun with SS braid and 4.5" thermocouple sticking into it.
__________________
On Tap: Surly Furious, Belgian Trippel, Da Yoopers Pale Ale, Chocolate Lager, Wee too Heavy (barrel aged Scottish), Belgian Barrel Aged Barleywine, Simcoe Pale Ale, Galaxy/Nelson Sauvin IIPA, Broken foot Pilsner, Da Yooper's Oatmeal Stout
Bourbon Barrel
Kegged:
Fermenting Gumballhead with Nelson Sauvin
on Deck: Dogfish Head Indian Brown Clone, Ocktoberfast Ale, Rodenbach Clone.
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10-18-2010, 11:51 AM
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#5
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BIAB Expert Tailor, custom quality BIAB bags at reasonable prices with quick shipping
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Location: Jersey Shore, Jersey
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As said above, stir more and wait a few minutes for the temp to stabilize. I never bothered mounting a thermometer, as I find it helpful to move it around the tun to check several spots for consistent readings. I have several of the inexpensive digital sticks available most anywhere and they seem pretty darn accurate.
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10-18-2010, 12:13 PM
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#6
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Join Date: Nov 2008
Location: austin
Posts: 135
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Stir more. Also if possible use another thermometer to take readings around the mash. Also what I usually do is dough in a few degrees hotter than what I should, as it will lose heat as I am stirring. I do infusion mashes in a cooler, so I dont direct fire the tun.
Also, just got a thermapen as a gift...looking forward to trying that out in the mash.
If you don't want to drop the cash on a thermapen, the taylor brand of digital instant read thermometers are pretty good. You can usually find them at target. usually 10-20 bucks.
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