Every cuisine has its characteristic 'flavor principle,' Rozin contends, whether it is tomato-lemon-oregano in Greece; lime-chili in Mexico; onion-lard-paprika in Hungary, or, in Samin's Moroccan dish, cumin-coriander-cinnamon-ginger-onion-fruit. (And in America? Well, we do have Heinz ketchup, a flavor principle in a bottle that kids, or their parents, use to domesticate every imaginable kind of food. We also now have the familiar salty-umami taste of fast food, which I would guess is based on salt, soy oil, and MSG.