It's funny how these puzzles come together. It starts with an idea; the idea is developed; the meta mechanism components are sorted out; the grid is selected; other things occur to you; then you clue the whole thing; and then
months later you find a spelling error and have to redo part of the grid. As a result, there's lots going on in this "week 1" puzzle - so much so, that it's probably more of a "week 2" or even "week 3" puzzle! The answer to the meta is a 4-letter dish, the specialty of a region very much not located in the middle of
5 across. (Google will absolutely be needed to confirm the meta answer!) Answer & explanation:
https://www.xword-muggles.com/viewtopic.php?p=169308#p169308