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Propylene glycol is allowed in alcoholic beverages up to 5%, and this would get you to about 29°F. You could probably throw in a little sugar, salt and good old ethanol to kick it down further. Re...
Answer
Propylene glycol is allowed in alcoholic beverages up to 5%, and this would get you to about 29°F. You could probably throw in a little sugar, salt and good old ethanol to kick it down further. Re...