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Old 05-01-2013, 08:10 PM   #1
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Default WLP001 super high attenuation

I did a IIPA with mostly 2row a touch of crystal and 2lbs of cornsugar. Mashed at 148F for 80min according to my notes. 1L starter stepped to 2L on a stirplate.

OG was 1.087

Final Gravity is 1.010

Calculated out 89% attenuation. The beer has stopped fermenting and I made sure I read both samples at the same temperature (60F).

Is this normal?? Seems really high.

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Old 05-01-2013, 08:55 PM   #2
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The attenuation is high because of the fermentable sugars you used. The 2 lbs of corn sugar used helped "dry" out the beer further and is the likely cause of the great attenuation percentages since it is fully fermentable.

(WLP001 has a attenuation of around 80 percent to begin with.)

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Old 05-01-2013, 10:25 PM   #3
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Yup, mashing at 148 plus 2lbs of sugar means high fermentability. Take out the sugar, and you have, what, a 1.068-1.070 OG beer mashed low? With a yeast like 001, it's not out of the question to see a FG around 1.01.


Don't worry, be hoppy.

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Old 05-02-2013, 02:38 AM   #4
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If you're aiming for a west coast style IIPA, I think finishing at 1.010 will probably end up being just fine.


Keg: Rye Saison, Belgian Golden Strong, DIPA, Citra IPA, English Barleywine aged on rum/oak, ESB, Vienna-fest, American-Oatmeal Stout
Secondary: Oud Bruin/Dark Sour, Rye Saison w/ Brett., Belgian Dark Strong, American Barleywine
Primary: Black Rye DIPA, Vermont IPA
On Deck: ESB, RIS, DIPA, German Pils

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Old 05-02-2013, 04:02 AM   #5
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Right in line with all my IIPAs I have done with similar mash temps and sugar additions using 001 or 1056. It will be good dont worry.


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