It's interesting to think what the transition point was when people just made do with whatever plants and animals were available nearby, and that was "food," to

It's interesting to think what the transition point was when people just made do with whatever plants and animals were available nearby, and that was "food," to when things became "<country/culture/region/etc> food." If tortilla wraps, beans, etc. were imported to Japan 300 years ago, that would just be Japanese food, but now if a Japanese restaurant started mixing those in, it would never escape the label "Japanese/Mexican fusion" or a variation on that.