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Old 11-30-2007, 08:29 AM   #1
Ras Skipper
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Default Alcohol Content

Hi,

i want to find my alcohol content.

I know that you take an initial gravity and a final gravity..thats fine..

but..

in first fermentation i added all my malts etc...this stood for 3 days...the gravity came down from 1038 to 1016...then I added another 1kg (2lb?) of glucose powder. this raised the gravity back up to 1036.

after 7 days the grav' is down to 1006 and ready for sec' ferm'..

i dont think the normal way of reading the alcohol content will work in this situation...

can anyone shed any light on the matter..

Thanks

Skips

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Old 11-30-2007, 08:44 AM   #2
Kai
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The glucose would have added the same number of points - 20 - had you added it pre-fermentation. Thus your theoretical OG is 1058, giving you somewhere around 6.7% with your FG. That's going to be a pretty dry beer.

Too dry? You're getting something very close to 90% attenuation with those numbers. What yeast are you using? Did I screw up?

Either way, as near as I can figure it that's where you stand.

Kai

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Old 11-30-2007, 08:47 AM   #3
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great..thanks mate..was aiming for the mid 6's...found some great wild hops..(ala other post)..should be an interesting tipple )

( how do we find out that the Kg of sugar has a value of 20???

(should i top up with a bit of water?)

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Old 11-30-2007, 09:00 AM   #4
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Yields .020 in a 5gal batch, that is.

two ways:
1) Palmer (howtobrew.com)
2) Measurement (you had the measurements in your post)

I've never liked the idea of adding water post-fermentation. I think some of the big macros do, though, so it might be fine. Anyone know?

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Old 11-30-2007, 09:02 AM   #5
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thanks

i'll look at that site..

cheers

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