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twistedvine

Tony (Twisted Vine)
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Still being a Newbi and partly a dolt...what is the best and most accurate way to figure out ABV of a finished wine???:sn
 

cpfan

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Subtract the post fermentation specific gravity from the pre-fermentation sg and multiply by a factor.

(final sg) - (starting sg) * 133
1.092 - .992 * 133 = .100 * 133 = 13.3%

There is much discussion about the factor, but that's the one I prefer.

If your question "ABV of a finished wine" indicates that you don't have both sg readings, then you have two choices...

1) vinometer - cheap and totally inaccurate (there is a thread about this)
2) send it to a lab - expensive and very accurate

Hope this helps.

Steve
 

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