Blue flashes in rum during fermentation [closed]








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While fermenting my rum wort (what rum is called before it is distilled) in a plastic fermentation barrel, I noticed little blue flashes appearing over the surface of the liquid. Any idea what could have caused this? I have looked around and the closest thing I could find is [triboluminescence](https://en.wikipedia.org/wiki/Triboluminescence), but that doesn't sound right to me...


