• J92@lemmy.world
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      1 day ago

      From a brief look up, it appears to be derived from collagen which is acquired from mostly skin and bones, of mostly cows and pigs.

      • AnUnusualRelic@lemmy.world
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        1 day ago

        After a wee bit of reading, bones are indeed one of the major sources. They just dissolve the calcium with acid and then can boil the collagen away. What clever little buggers.