The Harry Potter main series, for which I have a major case of nostalgia. I'll happily and accurately slag JKR off for being a dimwit with terribly stupid opinions, who would need to be both smarter and more committed to make her "make it up as you go along" worldbuilding make any sort of sense at all. Which, bluntly, it doesn't.
But considering how much of a turnip she is, parts of her worldbuilding is strangely compelling while others fail basic self-consistency.
I mean, just never. What people eat is a function of what is available/cheap/tasty/trendy at any given time, and I doubt the availability of both ingredients and "ideas" (recipes and techniques globally, trends for better/worse) has ever been higher globally, let alone in "developed" countries.