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Geez. The clay pots were probably fired in kiln that used dried cow or steer manure. It doesn't mean the shit was inside of the clay.
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Exactly. There are some American Indians that made/make pottery using relatively dry cow/buffalo manure as a sort of primitive kiln. The manure burns and coats the pottery with a shiny black covering at the same time. Though I cannot remember the tribe, it was a very large one that was very powerful in it's time before all us white folks came around and ruined everything. Beautiful pottery that I would be proud to own, but VERY expensive.
The use of pottery in brewing goes back further than the use of metal or the use of glass like modern brewers use. I've tasted orkney's skull splitter ale made by the very same company that makes the 'poop' ale you folks are poking fun at and that happens to be a damned good brewing company. While I will try to avoid their brews with the baked excrement additive, I will continue to drink their skull splitters with gusto and pray that there is no cross contamination in the brews.
Methinks that the Orkney company has made a small error in their willingness to try new things. Poop on the outside of the pottery probably means that animal dung was used in the firing process of the clay and NOT the actual brewing process. Of course when you really think about it that first batch had to be really crappy huh...