I am currently in the middle of reading Food Americana by David Page. It explains the history of all the different foods that are currently considered American food. Though I've only read about a third of the book, it has already succeeded in grasping my full attention. I am from the U.S. but I've never really thought about the origins of the foods of my country. This book explains every single detail so I recommend it even if you are not from the U.S.