Wilderfeast

From the back of the book:

A post-post-apocalyptic supercontinent where food is magic. A vast, wild, and old world, populated by monsters: giant, kaiju-esque creatures inspired by paleontology and cryptozoology. Play as a wilder, an outcast ranger who wields a gargantuan kitchen implement and gains powerful mutations from each monster they eat. Part monster hunters, part chefs, wilders work in packs and have taken on the duty of stopping the frenzy, an eldritch virus which makes monsters violent and self-destructive. Using their powers, wilders seek harmony between humanity and the wild. For all creatures, be they humans or monsters, obey the One Law of the One Land...