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Old 05-18-2011, 08:37 PM   #1
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Default Is 70% really that bad?

I've been working with my current set up to get the best efficiency. My best has been 76% and my worst has been 68%.

My typical mash step includes single infusion with 2 seperate batch sparges (due to the fact that I have a 5gallon mast tun).

Any recommandations to boost this a little or to keep it out of the 60's?

My very last brew (last night) was 70%. Which in the grand scheme of things is basically .3% alcohol content... Not a big deal.

The grain mill that I use is a general that the LHBS offers to it's customers. The brew master there says it's efficiency is estimated at 75%.

Do you think that it would be better to run the grain through the mill twice or would that break it up too much?

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Old 05-18-2011, 08:43 PM   #2
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try buying grain from brewmasterswarehouse and see what your efficiency is

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Old 05-18-2011, 08:43 PM   #3
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Is it really that bad? I say no, who cares.

IMO, it's more important to have a general idea of what kinda efficiency you're getting with your system (which, it sounds like you do) & account for that and shoot for consistent results, rather than just pursuing an arbitrary number.

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Old 05-18-2011, 08:48 PM   #4
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70% isn't that bad.. if you get consistency that's what's most important. Could you do better with a finer crush? Yes, probably.. but how much extra grain per batch is that really, a lb or two?

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Old 05-18-2011, 08:51 PM   #5
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Ditto. But, what temp are you sparging at? I heat my sparge water to 185F before adding to the MLT. I picked up almost 10% when I started doing that.

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Old 05-18-2011, 08:54 PM   #6
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If you don't think it's bad than it's not bad

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Old 05-18-2011, 09:58 PM   #7
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IMO, 70% or so when batch sparging is not bad at all, especially since it appears to be an honest number. Beware of exaggerated efficiency claims and don't let them bug you. I get about the same when I batch sparge, which is only rarely when making starter wort to can. You are doing just fine and chasing higher efficiency numbers isn't worth the trouble. Use a couple of more pounds of malt, or whatever it takes, and brew on. Consistency is the important thing and if you overshoot your target a little, you get more beer or a higher gravity beer. How bad can that be? IMO, there are way more important brewing things to focus on.

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Old 05-18-2011, 10:00 PM   #8
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Quote:
Originally Posted by motobrewer View Post
try buying grain from brewmasterswarehouse and see what your efficiency is
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Old 05-18-2011, 10:06 PM   #9
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The finished product is what maters. With low efficiency you may end up oversparging and get astringency from tannins. If it tastes good to you it's good enough.

Batch sparging can hit efficiencies over 90% with a good crush, proper pH, good stiring and complete draining...honestly.

Kia covered this better than anyone else.
http://braukaiser.com/wiki/index.php...ing_Efficiency

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Old 05-18-2011, 10:13 PM   #10
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Quote:
Originally Posted by Malticulous View Post
Batch sparging can hit efficiencies over 90% with a good crush, proper pH, good stiring and complete draining.
The only way I would be convinced of 90% efficiency for a batch sparge would be if I personally did the required measurements and calculations.
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