Um... No... You don't chew it and I have never heard of anyone who has, ever lol. My family grew up tanning hide into leather... We would soak it, pull the hair off, you can rub poop on it (gross, I know, but it works) called bating, it makes it flatten out...We would then stretch the hide out and rub it with a mixture of water and crushed oak bark-that makes "tannin"... Then there's brain tanning, but I have never done it that way.