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mattmaroontoday at 5:49 AM1 replyview on HN

This is actually a myth. I’ll have to see if I can find the papers I read but mass spectrometry has shown that methanol comes out throughout the entire process. The idea that things come out at their boiling temperature is a drastic oversimplification.

Methanol is really only present in significant amounts in fruit mashes because it comes from fermentation of pectin. Grain or sugar-derived alcohol barely has any at all.

The foreshots you throw out do have things that taste bad and which you would not want to drink much of, but even if you mixed it all back in and got drunk, it would be the same amount of all of those chemicals you’d get if you just drank the mash, which is itself basically just beer or wine.

We distillers are a lot more likely to burn our house down than any other form of injury.


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akerstentoday at 6:44 AM

> This is actually a myth. I’ll have to see if I can find the papers I read but mass spectrometry has shown that methanol comes out throughout the entire process. The idea that things come out at their boiling temperature is a drastic oversimplification.

Please do find those papers! They may be describing a radical new chemistry that I'm not familiar with.

To be clear - methanol boils at 64C and ethanol boils at 78C. Are you suggesting that in standard distillation, there is still some non-trace methanol coming over at 78C? If I personally observed that in a laboratory setting, I'd quickly assume measurement error or external contamination.

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