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Old 12-13-2011, 08:19 PM   #1
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Default Inconsistent Efficiency

Hey All,
I've brewed 5 all grain batches so far.. All have produced great beer but I have had incredibly inconsistent Efficiency..

First batch was around 78%
Second Batch 68%
Third Batch 62%
Fourth Batch 75%
Fifth Batch 60%

I Mash in a 10 gallon round beverage cooler with a CPVC manifold, Fly-Sparge (using a hose and wort aerator) and do not do a mash out.

All ingredients have been from the same LHBS and grains are crushed there.

Any idea why my efficiency is variable?

Thanks


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Old 12-13-2011, 08:22 PM   #2
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What were the grain bills for each batch? A lot of times larger grains bills will have lower efficiencies and need to be taken into account.


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Old 12-13-2011, 08:25 PM   #3
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Oh, boy, that's frustrating! I wonder if the LHBS changes their mill settings (or checks it). How's the crush look to you, overall? Is it the same each time?

Do you use the same % of mash water for each pound of grain in each batch? I guess I'm trying to think of any variables.
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Old 12-13-2011, 08:26 PM   #4
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Quote:
Originally Posted by xjmox14x
What were the grain bills for each batch? A lot of times larger grains bills will have lower efficiencies and need to be taken into account.
The first batch at 78% was the largest grain bill at 15-16 lbs.. The second one was a similar 14 - 15 lbs.. The other three are smaller beers but all still around 10-12 lbs...
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Old 12-13-2011, 08:28 PM   #5
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This is by far the best article and tool about this I know of. If you use the spreadsheet a few times you will easily find the inconsistencies in your process.

Troubleshooting Brewhouse Efficiency - German brewing and more

Here is a shortcut to the spreadsheet.
http://braukaiser.com/documents/effi...calculator.xls
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Old 12-13-2011, 08:30 PM   #6
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Quote:
Originally Posted by Yooper
Oh, boy, that's frustrating! I wonder if the LHBS changes their mill settings (or checks it). How's the crush look to you, overall? Is it the same each time?
It looks about the same to me. But I didn't look that close..

Quote:
Originally Posted by Yooper
Do you use the same % of mash water for each pound of grain in each batch? I guess I'm trying to think of any variables.
Yeah I mash at 1.25 quarts per pound..
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Old 12-13-2011, 08:45 PM   #7
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What temp is your sparge water at?
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Old 12-13-2011, 08:46 PM   #8
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I shoot for 170..

It's been with in +/- 5 degrees..
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Old 12-13-2011, 08:55 PM   #9
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If you can i would suggest getting your own grain mill. Looks like all else is the same in your process.
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Old 12-13-2011, 09:01 PM   #10
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Quote:
Originally Posted by beerman0001
If you can i would suggest getting your own grain mill. Looks like all else is the same in your process.
Saving up for one now... Unless SWBO-Santa brings one..


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