http://www.smbc-comics.com/comic/humourous
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All natural, in the sense of not having been made in a particle accelerator.
Bonus panel
this post was submitted on 06 Apr 2025
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Saturday Morning Breakfast Cereal
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Posts and discussion about the webcomic Saturday Morning Breakfast Cereal by Hugo Award-winning author Zach Weinersmith (and related works)
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Aquafortis is specifically nitric acid. It's called that because it can dissolve "any" metal except for gold. Where "any" is "anything they knew about in the middle ages".
also, green vitriol is actually green. And blue vitriol, copper sulfate, is (surprise) blue. Copper sulfate is also what they put in antifreeze as a vomiting agent. I once had a single drop as a mistake, and it works REALLY well.
And the stuff that can dissolve gold: aquaregia