sivdrinks
Well-Known Member
Not sure how to do it. Added 8oz of 80 proof Jim Beam Black to the secondary of an 8.4ABV Imperial Stout, 5 gallons. Any ideas?
theveganbrewer said:Sounds about right. He just calculated the percentage for the whole batch. Each bottle will be about 8.8%.
Now this may be a stupid question, but what would be wrong with taking another gravity reading after adding it and simply recalculating the ABV? I figure that would work unless the extra alcohol somehow messes with the reading.
29thfloor said:That gravity reading wouldn't do you any good because you're comparing it to the OG reading which was before the additional alcohol was added.
The reason the difference between OG & FG can be used to calculate ABV is because it gives you a measure of the amount of sugar converted to alcohol. If you add to or dilute your mixture, you're now measuring the effect of converted sugar and the dilution...so, unless you correct for the dilution, your math will be off.
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