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?
But then how can I torment a teenager who says “We don’t have any food in the house!” by reminding them that food is a social construct? They’re never gonna end up saying “We don’t have any cuisines in the house!”