My spouses family has a lot of southern US dishes that are absolutely hurt, but I think the weirdest is pineapple au gratin. Thank potato au gratin but with pineapple instead of potatoes and no other changes.
food especially among the ruling class often involves plundering raw ingredients from colonized people without understanding a damn thing about how to cook these new ingredients and just having their servants or slaves make disgusting things like this as a way of showing off what a rich piece of shit they were to other rich pieces of shit