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Old 11-17-2012, 11:34 PM   #21
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I get consistently between 80-90% (80 for big beers, 90 for smaller). I use a 12gal rectangular cooler with a bazooka screen and default setting on my BarleyCrusher.

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Old 11-17-2012, 11:46 PM   #22
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I usually hit around 80-85% sometimes more sometimes less.

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Old 11-17-2012, 11:56 PM   #23
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Efficiency really needs to be defined. I get 80%+ mash efficiency, but my efficiency into the fermenter is usually 75%. The efficiency into the fermenter depends a lot on your fluid losses in your system from your boil kettle to your carboy. It is good to know both numbers.

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Old 11-17-2012, 11:58 PM   #24
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OK...here is where i get to learn something........how is mash efficiency different from total efficiency?

If I mash and get a SG.......how does it decrease by the time I end up after boil?

Thanks!

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Old 11-18-2012, 12:03 AM   #25
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Originally Posted by mgortel View Post
OK...here is where i get to learn something........how is mash efficiency different from total efficiency?

If I mash and get a SG.......how does it decrease by the time I end up after boil?

Thanks!

Well, yes, definitely. But there are a couple of different terms here to define first.

mash efficiency- how well you convert your starches to sugars. Should be very high.

Lautering efficiency- how well you get those converted sugars into the boil kettle in the liquid you've used. If you're leaving lots of sugars behind in the grain, this is where it would show- in the preboil SG.

Brewhouse efficiency- the actual % you get into the fermenter. This is with trub losses, kettle losses, etc.

If you are leaving, say, 1 gallon of wort behind in the kettle, your efficiency % will look low because you're not accounting for the gallon in the kettle. Some people do that, to filter out the hot break, hops debris, cold break, etc. But if you're going to do that, then it should be accounted for so that you hit your desired OG in the fermenter, although it's NOT part of the mash efficiency calculation.

I hope that makes sense.
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Old 11-18-2012, 01:21 AM   #26
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Quote:
Originally Posted by modenacart
Efficiency really needs to be defined. I get 80%+ mash efficiency, but my efficiency into the fermenter is usually 75%. The efficiency into the fermenter depends a lot on your fluid losses in your system from your boil kettle to your carboy. It is good to know both numbers.
Agreed. But, the OP did ask specifically for the mash efficiency.
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Old 11-18-2012, 01:28 AM   #27
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Efficiency really needs to be defined. I get 80%+ mash efficiency, but my efficiency into the fermenter is usually 75%. The efficiency into the fermenter depends a lot on your fluid losses in your system from your boil kettle to your carboy. It is good to know both numbers.
I think you hit the nail on the head. My mash efficiency is higher than my brewhouse effeciency. Whenever people talk about efficiency I always wonder if they are talking about the mash or brewhouse.
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Old 11-18-2012, 01:50 AM   #28
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Agreed. But, the OP did ask specifically for the mash efficiency.
True, but a lot of times when people ask that, they don't really know what they are asking for or know what they really want. That is the reason I bring it up.
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Old 11-18-2012, 01:53 AM   #29
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75% brewhouse.

Less for bigger beers as only a 10Gal kettle (Final running usually very high for big beers. 1020ish)

No interest in doing anything else but batch..

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Old 11-18-2012, 01:58 AM   #30
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Originally Posted by modenacart

True, but a lot of times when people ask that, they don't really know what they are asking for or know what they really want. That is the reason I bring it up.
I hear ya. He did also mention batch sparging in the title so I just assumed that he was looking at mash efficiency. Unfortunately, I'm wired to automatically refer to mash efficiency, especially in recipe formulation. Hopefully, this thread will teach me to be more discerning in the future.
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