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Old 02-18-2008, 06:00 PM   #1
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Default Super High Efficiency 91%

I am sure no one will believe this as I had to check three times to make sure I wasn't crazy. According to ProMash my efficiency on my last brew was a shocking 91%!!!
I collected 7 gallons of wort in my kettle with a SG of 1.062. The recipe I brewed can be found here:
Three Floyds Alpha King
I used 10 gallons of spring water and 5.2 Mash Stabilizer. I hit my mash temp of 154 for the entire mash.
I doubt I will ever get these efficiency numbers again. I had to adust my hop additions to compensate for the higher alcohol content.
Just wanted to share,
Dustin

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Old 02-18-2008, 06:23 PM   #2
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I got 91% yesterday. It's the third or fourth time I've done it. I'm usually around 87%. If your next batch turns in another high efficiency number, you should adjust your recipes. I set mine at 85%. Highest I got was 97%, but I'm pretty sure there was an extra couple of pounds in the grist that I didn't account for. Battery on my scale was going bad.

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Old 02-18-2008, 06:36 PM   #3
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I got in the 90's on my last AG brew, too. I set my brewhouse efficiency at 85% in BeerSmith when I design recipes now.

I'm thinking about opening the spacing on my Barley Crusher to lower my efficiency. Both Jamil Z. and Brewpastor have expressed concerns about super high efficiencies - what else are you getting out?

On the other hand, its nice to be able to brew a 1.090 beer with only 15# of grain.
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Old 02-18-2008, 06:39 PM   #4
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I once got a mash efficiency of 112% but then realized the calcualted efficiency was set to 70%.

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Old 02-18-2008, 07:43 PM   #5
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I brewed up a batch of EW's HA on Saturday and I too hit 91%.

I'm glad to see that others have set their brewhouse efficiency at 85%. That's what I plan on doing too.

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Old 02-18-2008, 07:47 PM   #6
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Quote:
Originally Posted by Beerthoven
Both Jamil Z. and Brewpastor have expressed concerns about super high efficiencies
What were these concerns? I have a few in mind, but just want to double check what else is there.

Kai
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Old 02-18-2008, 08:00 PM   #7
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Quote:
Originally Posted by Kaiser
What were these concerns? I have a few in mind, but just want to double check what else is there.

Kai
I don't know the specifics. In one of his shows, Jamil Z says he shoots for 70% efficiency. He said he doesn't want to go much higher than this because he was concerned about what else besides sugar he'd pull out of the grain but he didn't elaborate. Brewpastor has said much the same thing in one of his posts.

What do you think about these high efficiency levels?
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Old 02-18-2008, 08:09 PM   #8
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Maybe JZ is just jealouse he cannot get 90+ effeciency out of his 5K B3 system..lol

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Old 02-18-2008, 08:09 PM   #9
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I make great beer routinely hittin 80%+. Whatever Jamil is phobic of, I don't seem to have a problem with it.

What I STILL don't get about promash is that I take my OG readings FROM THE CARBOY once it's cooled and strained in but before pitching. But in promash, under the efficiency section of the session report, if I set the option to "measurement taken from carboy", which is where my measurements ARE taken, it always tells me I'm getting 96, 97, 98%...sometimes over 100%. I know there's no way.

Supposedly the difference has to do with the wort loss between the kettle and the carboy...maybe I've just set that too high. It's really difficult to tell, but what I do know is that once I have 5.5 gals in the carboy, I take my reading. So all I've been doing is using the "measurement taken from kettle" setting, because it makes more sense.

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Old 02-18-2008, 08:17 PM   #10
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Quote:
Originally Posted by Evan!
I make great beer routinely hittin 80%+. Whatever Jamil is phobic of, I don't seem to have a problem with it.

What I STILL don't get about promash is that I take my OG readings FROM THE CARBOY once it's cooled and strained in but before pitching. But in promash, under the efficiency section of the session report, if I set the option to "measurement taken from carboy", which is where my measurements ARE taken, it always tells me I'm getting 96, 97, 98%...sometimes over 100%. I know there's no way.

Supposedly the difference has to do with the wort loss between the kettle and the carboy...maybe I've just set that too high. It's really difficult to tell, but what I do know is that once I have 5.5 gals in the carboy, I take my reading. So all I've been doing is using the "measurement taken from kettle" setting, because it makes more sense.
I don't know what the concern is with high efficiencies, which is why I'd like someone who is more in touch with the science than I am to tell me. I suspect there are a dozen other factors that have a bigger impact on the finished beer, but I'd still like to know out of curiosity.

BeerSmith gives three different efficiencies. The one I normally look at is efficiency into the boiler, which is basically pure extract efficiency out of the MLT. The other two take into account kettle losses, etc. Can't help ya with Promash.
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Last edited by Beerthoven; 02-18-2008 at 08:28 PM.
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