This is awesome. I think it would be cool to also have it where it retraces the history of food. I bet you anything you could probably retrace most foods into a handful of original recipes. And it'll be cool to see cultural fusion that happens when you have countries like the Portuguese showing up in Japan and introducing curry and spices from India.
Your project got me hungry and decided to feel lucky and long story short now I'm grabing ingredients for Swiss's Rösti dish.