Author Topic: Mash Temps.  (Read 3211 times)

Offline srnoel

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Mash Temps.
« on: February 07, 2012, 10:48:03 AM »
Yesterday during my mash I noticed something.  I always poke my temperature probe into all different parts of the grain bed before I close the cover for the mash.  Except yesterday I kept getting slightly different temperatures in different spots of the mash.  I stirred more thinking that would fix it.  But no, I couldn't get it all even.  The temperatures were only off by a 1-2degrees.  Target temperature was 151, and I got temps in spots from 149 to 153.  I eventually gave up and figured it would even itself out.

Is this something normal or did something...funky...happen yesterday.

And yes, my thermometer is accurate.  I ran some tests with it to make sure it was working properly after that happened.

Offline jmcamerlengo

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Re: Mash Temps.
« Reply #1 on: February 07, 2012, 10:50:20 AM »
Hot spots can be pretty common in the mash but if you stirred considerably and it was only small 1-2 degree fluctuations Id say youre totally fine!
Jason
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Offline euge

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Re: Mash Temps.
« Reply #2 on: February 07, 2012, 11:41:54 AM »
How deep are you taking your readings? It has to be deep within the bed I've found.
The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman

Offline dmtaylor

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Re: Mash Temps.
« Reply #3 on: February 07, 2012, 01:35:17 PM »
Totally normal.  Don't sweat it at all.  Take the average, and that's your mash temperature.  Averages are fine for this.
Dave

"This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption. Let us give praise to our Maker, and glory to His bounty, by learning about... BEER!" - Friar Tuck (Robin Hood - Prince of Thieves)

Offline bluesman

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Re: Mash Temps.
« Reply #4 on: February 07, 2012, 02:39:53 PM »
Totally normal.  Don't sweat it at all.  Take the average, and that's your mash temperature.  Averages are fine for this.

+1

After doughing in, I like to stir the mash for about 2 min then take several readings around the mash. Variations +/-2 degrees are ideal....+/-1 degree is better but not necessary.
Ron Price

Offline srnoel

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Re: Mash Temps.
« Reply #5 on: February 07, 2012, 04:46:40 PM »
Good to know all is well, I wasn't too worried about it to begin with.

As for the depth in the grain bed I take the reading - I try to vary that  as well by trying to take readings from top, middle and bottom sections of the bed.  I didn't pay attention at the time to see if the temperature differences lined up with the how deep the thermometer was in the grain bed.

Offline bluesman

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Re: Mash Temps.
« Reply #6 on: February 07, 2012, 07:05:53 PM »
What are you using as a mash tun...cooler?
Ron Price

Offline srnoel

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Re: Mash Temps.
« Reply #7 on: February 08, 2012, 02:47:56 PM »
I use a coleman xtreme cooler for my mashtun.

Offline oscarvan

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Re: Mash Temps.
« Reply #8 on: February 09, 2012, 06:48:53 PM »
What color is it?
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Offline srnoel

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Re: Mash Temps.
« Reply #9 on: February 09, 2012, 06:59:08 PM »
Blue...of course.  I got the blue one for the improved efficiency.

Offline denny

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Re: Mash Temps.
« Reply #10 on: February 10, 2012, 09:30:59 AM »
Blue...of course.  I got the blue one for the improved efficiency.

Yep...blue will get your efficiency up to 137%!
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Offline bluesman

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Re: Mash Temps.
« Reply #11 on: February 10, 2012, 10:06:36 AM »
Blue...of course.  I got the blue one for the improved efficiency.

Yep...blue will get your efficiency up to 137%!

...but only if you mash on Sundays.  ;D
Ron Price

Offline bluesman

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Re: Mash Temps.
« Reply #12 on: February 10, 2012, 10:09:49 AM »
The reason I asked about the type of mashtun is because a cooler is probably the most thermally efficient. I typically get about 1-2 degrees of temp loss over the course of an hour in my blue Coleman Ultimate Extreme...which is bluish-gree btw.  ;)
Ron Price

Offline bonjour

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Re: Mash Temps.
« Reply #13 on: February 10, 2012, 10:52:11 AM »
I find that the yellow of my igloo cooler, being a warm color, helps to lessen the temp drop of my mash. ;D

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Offline dmtaylor

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Re: Mash Temps.
« Reply #14 on: February 10, 2012, 11:09:45 AM »
I get almost identical efficiency when I mash in a bag in my stainless boil kettle with a tiny bit of added heat and occasional stirring compared to when I use my blue cooler.  And now I got one of those orange cylindrical coolers so I'm wanting to try that sometime to see if it makes any difference.
Dave

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