"Mortar and pestle + bones of any kind = Pouch (of crushed bones?)"
Bonemeal, presumably. It's usually used in farms and gardens, but in a fantasy context it's often an alchemy ingredient.
Improving your leather armor with a mobile kitchen is probably a placeholder since there aren't any leatherworks (as far as I can tell) in the game that would otherwise give you the chance to cure (harden) it, which normally involves treating it in vats of various unpleasant substances.
