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Perz1valtoday at 5:40 PM1 replyview on HN

I put aluminium foil over a bowl of pizza dough, as it grew the top touched the foil and in a few spots tiny holes appeared in the foil. I wonder if it was carbonic acid or what


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manwe150today at 7:10 PM

It probably formed a weak battery electrode with the bowl and electro-deposited it on the substrate (pizza). Happens often with tomato sauces, like lasagnas.

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