Plenty of nutria recipes on the internet
I have plenty of recipes for game, including feral hog, but most people from cities won’t even eat venison or rabbit, never mind pork from outside the factory farm. If more people ate free-ranged meat, they would already be used to meat that actually has a real flavor and probably be willing to try wild game.
It'll have to be a SHTF scenario before I ever eat a Nutria Rat. Ughhh