Hear me out. There’s nothing innate to an object that makes it “food”. It’s an attribute we give to certain things that meet certain qualities, i.e. being digestible, nutritious, perhaps tasty or satisfying in some way, etc. We could really ingest just about anything, but we call the stuff that’s edible “food”. Does that make it a social construct?
Thing you pick up in nature (a fruit, for example, like apple) still called food.
But i like your idea, perhaps we rephrase it. What about call it “dishes” or “cuisines”
=> is “cuisines” a social construct.