Beer fermentation
On a brewery tour, while accompanying people who are unfamiliar with brewing, one can sometimes hear the question in the brewhouse when looking at the wort in the lauter tun “Does this already contain alcohol?”. After a bit of chuckling, one gets back to business as usual, explaining fermentation and the associated formation of alcohol in a matter of about 5 minutes. In Brewing 101, this will take a bit longer but will be much more detailed.
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