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Old 01-29-2013, 04:35 AM   #1
boomguy
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Dec 2012
Vancouver, BC
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Started down the path of all grain and decided to go small to try it out, 1 gallon brewing. I picked up a small 3 gallon cooler that I have converted to a mash tun, Click image for larger version

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ID:	97246 I have put two batches through it so far and the first try I hit my dough in of 150, held even for an hour, missed my mash out, only 162 with 180 water but no stuck sparge. This time I hit the dough in as before but raised the mash out temp to 185, then again to 195 and again to 205 but could not for the life of me get anywhere near 170 for a proper mash out. Yes I tried sparging three times, 1/2 gallon at a time and still hit my preboil target. Grain bill was about three pounds of grain with a preboil volume of 2.5 gallons. I am just not sure why the little cooler will be fine at 150 for an hour with no noticeable warm spots but as soon as I try to sparge it wont get over 164. Any thoughts or tips would be helpful.
Here is a link to the recipe little-dipa

Reason: bad link

 
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Old 01-29-2013, 05:54 AM   #2
Friedclutch
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May 2012
Citrus Heights, ca
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No mash out needed for batch sparge. Nice mash tun!

 
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Old 01-29-2013, 06:26 AM   #3
sjohnv3
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Jan 2013
Yelm, Washington
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A nice warm temperature around 165ish will help get the surgars more fluid. I have done sparge temperatures between 155 and 175; I have been everything but consistant as a newb of only 6 batches of all grain. The only thing that suffered was low effeciency at the low temps but otherwise made great beer. Today I brewed BM CB and mashed at 151. The grain bed was 142ish after first run. I added 4 1/2 gal of 188 deg water and raised the temp to 172. I hit my OG on the nose and was very happy.

 
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Old 01-29-2013, 05:49 PM   #4
boomguy
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Dec 2012
Vancouver, BC
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I was wondering if not hitting the mash out temp what would the effect be on the brix? Is there a way to estimate what the brix should be after mash out so that you are in the ballpark for the for the og post boil?

 
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Old 01-30-2013, 07:14 PM   #5
sjohnv3
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Jan 2013
Yelm, Washington
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I am not familiar with brix. My understanding is that mash out is used to stop the enzymes from working to perserve the work that has already been done. I do not think the average homebrewer needs to do this for two reasons.

1. Grains are well modified these days (I just take this at face value because I have read it)
2. Most homebrewers will be raising the temperature for their boil rather quick compared to the big brewers.

The proccess of heating the grain bed for the sparge does give better effeciency; this I know.

 
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Old 01-31-2013, 12:09 PM   #6
jarnock
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Dec 2012
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I too have hard time trying to "mash out," and I did exactly what you did - I came on here and asked about it. The general consensus is, its not needed. I just heat my water up to 170-180 and throw it in. Evidently you are not supposed to go over 170. Hope this helps, and cheers!
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Old 01-31-2013, 12:30 PM   #7
ApothecaryBrewing
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Nov 2012
Rochester, NY
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I tend to skip the mash out, but I split my batch sparge into 2 additions. The first I try to get piping hot so it raises the grain bed to around 170F. This addition is normall something like 2.5 gallons of 185-190 degree water. The second addition I add hangs around 170F.

To do this I will heat up about 3/4 of my sparge water to 190, add 2/3 of that, then add some cooler water to the kettle/lauter tun to get to my 2nd sparge addition volume while my first sparge is sitting and this brings the second addition down to 170F ish. A little complicated and maybe not entirely necessary, but to each their own.
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Old 01-31-2013, 07:10 PM   #8
boomguy
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Dec 2012
Vancouver, BC
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I tried to get my mash temp up to 170 but the tun just wouldn't go there for some reason, I would have thought that with the grain bed just being at 150 that adding 185 would have at least brought it into the mid 160 area... maybe there isn't enough grains since these are for one gallon batches. The surface area is only about 12" x 12" though.

 
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Old 02-01-2013, 12:04 AM   #9
sjohnv3
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Jan 2013
Yelm, Washington
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I have a hard time hitting 170 too. I have noticed the grain bed dropps in temperature about 5-10 degrees when I drain it. I tried 200 deg once and over shot it by 10 deg. Go figure

 
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Old 02-01-2013, 02:17 AM   #10
eric19312
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Dec 2012
, NY
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I'm sorry if I caught this late. Bug are you using software to calculate the infusion needed to get to 170? Mine usually (when I mash out) calls for a surprisingly high addition of boiling water.... That is Beer Alchemy.

 
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