How to calc ABV?

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nickwhit9911

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I made my first mead I started with a specific gravity of 1.070 which then fermented down to 1.000 where it was to dry for my liking so I added sugar till I got to 1.020 but at that point it started fermenting again and went to 1.000 again when I saw this I again added sugar untill 1.068. my question is how do I do that calc to find the ABV of my first mead?
 

RPh_Guy

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Did you add water along with the sugar?

Did any fermentation occur after adding the last round of sugar?
 
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nickwhit9911

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Yes I added water with both and no to starting fermenting
 

ScrewyBrewer

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The basic method to calc ABV is (ABV = (OG - FG) * 131.25). I don't think adding sugar, which will only ferment out, will make your mead less dry though.
 
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nickwhit9911

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The basic method to calc ABV is (ABV = (OG - FG) * 131.25). I don't think adding sugar, which will only ferment out, will make your mead less dry though.
My last sugar added did not ferment out it is at 1.060 now
 

RPh_Guy

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nickwhit9911

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You could try adding honey instead of sugar next time, it is less fermentable than raw sugar.
I am going to try that next time but this time I used all the honey I had and didn't have the money to get By more
 

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next time, if you are wanting to back sweeten your mead, after initial fermentation I would use 1 campden tablet per gallon and Potassium Sorbet.

To answer your question, i would have the slightest idea on to figure out your abv after it fermented 3 different times. you will be able to do your initial one by using abv calculators such as ABV Calculator - MeadMakr but it will not include all the extra sugar that you added.
 
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nickwhit9911

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How much water was added? Do you know the volume of mead before and after?

Hardly.

The gravity drop means some of it did ferment.
I got the final gravity wrong it is 1.060 since I added the sugar the last time
 
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nickwhit9911

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How much water was added? Do you know the volume of mead before and after?

Hardly.

The gravity drop means some of it did ferment.
It was almost a gallon when I added sugar water for the last time I added 1.5 cups of water
 
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nickwhit9911

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After sorry I thought I added that earlier
I started with a gallon then I lost some from racking it so that's when I added in the first round of sugar water back up to a gallon and then I wrecked it again when it got done fermenting and that's when I added the second round of sugar water
 

RPh_Guy

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1.070 to 1.000 is about 9.4% ABV. Let's say you had 0.85 gal after racking.

Diluting to 1 gal reduced ABV to 8%.

Fermentation of the sugar 1.020 to 1.000 added 2.6% ABV, giving 10.6% ABV.

Adding 1.5 cups water plus enough sugar to hit 1.060 gives a final volume of 1.21 gallons, diluting the ABV to 8.8%.

Feel free to make any corrections if I've misunderstood your measurements.
Cheers
 
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