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Old 03-23-2009, 03:11 PM   #1
Teddypower
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Default Beer Smith Final Gravity Too High?

I have entered all the information from the Stone IPA clone from the December BYO and I am getting a Final Gravity of 1024 when the recipe calls for 1012. There is probably something simple I am doing wrong but I can't see it. Anyone have any suggestions? I am using Wyeast 1968.

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Old 03-23-2009, 04:25 PM   #2
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It probably has something to do with the attenuation setting on the yeast. This can have an affect on the FG.


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Old 03-23-2009, 04:48 PM   #3
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I changed from wyeast 1968 to Notty and came a lot closer to the estimated FG. Since I have a ton of Notty on hand I will probably just use that.
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Old 03-23-2009, 06:02 PM   #4
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Don't change the yeast just because of BeerSmith results. I have found that some of the info is somewhat "generic". Like $6.00 for each yeast..... Verify the attenuation expectation from the lab, not the program.
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Old 03-23-2009, 06:50 PM   #5
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starter size also affects attenuation...
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Old 03-23-2009, 08:35 PM   #6
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I checked the Wyeast site and it lined up perfectly with Beersmith. The starter size I have is 1.5L so I don't think that is affecting it.
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Old 03-23-2009, 08:42 PM   #7
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IIRC beersmith just uses the manufacureers average stated attenuation for the calculation. People here routinely get the high range and above the manufacturers stated attenuation by:
1: Making a large viable starter
2: Aerating very well
3: keeping a close eye on temperature

I would keep the yeast the same as stated in the recipe you are following (especailly if you're going for a clone) or the beer just won't have the same flavor profile.
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Old 03-24-2009, 12:38 PM   #8
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i'll check when i have time, as i'm not sure the software takes these into account: grains that need a mash when no mash profile is selected, temp of mash, unfermentable sugars.

what does your grain/extract bill look like?


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