Mysterious.....Never heard of getting “bitter & minty” from the start of a spirit run. And mint flavor and aroma might be desireable in a gin, but you’d have to macerate mint leaves to get that in the product and even then it would be tricky to get over to the product. So, I’m suspicious that it (the mint character) was residual oils left in the stillhead from a previous distillation and your new spirit run just washed it out of “the pipes”. Otherwise, I have no idea how you’d get it in the SSS spirit run. Sorry, not much help here.
If your product condenser is cooling the product at the spout below the 20*C calibration temperature for your hydrometer, then the reading would be off, that is, it would show the %ABV as slightly less than the spirit actually is because the cold density is higher than the corrected density. Thus, the hydrometer measures incorrectly.artooks wrote: ↑Sun Dec 13, 2020 3:53 am2) the reason that the ABV was not high was it my new cooling lines that I use from tab water, with tab water the water always come cold and maybe could it be that it was too cold and not tepid that I faced this problem, or should I use different packing material to reach this goal ?
So, your cold water line could be the cause of this. Simply measure the temperature of your product and temperature correct the reading of the Proof & Traille accordingly. And remember, with high proof alcohol the temperature of the spirit will dramatically affect density readings.
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