TIL While leather is edible, largely containing 60–70% water and 30–35% protein, only leathers that are either untanned or vegetable-tanned can be eaten. Leathers tanned by chemicals like in shoes, wallets, and luggage will not be edible.

https://www.mashed.com/478694/is-leather-actually-edible/
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1fzr1j1/til_while_leather_is_edible_largely_containing/