Isopropyl alcohol causes cancer
(media.greatawakening.win)
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Just keep your mash under 79 degrees centigrade in the still pot so you don’t get any 1-propanol in the output. This is why the old-time bootleggers kept the “first cut” or early distillate for themselves or their favored customers. As the mash temperature rose over 80 C, the unwanted products started coming over with the ethyl alcohol.