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I have been looking at the videos of distillery tours and the info pages so I understand most bourbon is produced using a beer stripping column followed by a doubler. What I haven't been able to see is and where the heads and tails are being removed in this process. From what is presented the beer strippers don't seem to be designed or run as fractionators. Can anyone enlighten me? Thanks Jake
The doubler is a special piece of work. It is not a further still. It is just vaporizing and condensing the raw whiskey once again. So the vapors come closer in contact to the copper. This changes the taste by a catalytic conversion. There are no faints or pot ales.
Thanks Horst for your feedback. So are there no heads to remove? Or is it that, because the process is continuous, they are there but at a low background concentration rather than coming off concentrated at the start of the run as they would in a pot still?
@Jake The stills I saw weren't taking off the raw spirit at the top of the column, where the lighter feints concentrate. They took out the liquid some distance below. So the feints should stay at the very top and get converted by temperature and copper slowly to more suitable and heavier aromas, which will then pass on the the doubler.
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