Thinking about the various foods we take for granted - so many of these recipes are very "high hanging fruit". We might easily imagine the discovery of cooking meat, but other things like gelatin (pulverised bones/hooves), bread (ground, baked grain), cheeese, etc etc, all seem amazing and implausible to have been invented/discovered.
We could imagine this amazement to be a cousin to that used by those who don't hold with Natural Selection because of irreducible complexity, haha. "But who would buy a half-baked cake?"
What nonobvious foods (of complexity of production within reasonable distance with what most people eat nowadays) have we missed out on so far?