Reddit reviews Selling 'em by the Sack

Potato does a great job of exploring the socioeconomic effects of the potato on various populations in the world.

Cannibals and Kings is more on the anthropology side, but there is a least one really good chapter that discusses reasons why certain cultures developed religious dietary restrictions.

A History of White Castle is an interesting read about the conditions that brought about the rise of the fast food industry in the US.