Salt: A World History ~ Mark Kurlansky
If you like history or want to learn about it, this book offers a very interesting way to do so. Salt is universal, every civilization has had a need for it. Rich, poor, all used salt. This book talks about different places in the world and how salt was used, including minority civilizations and not just the major ones. It has some fascinating facts about salt use through the ages as well. A good read. However, each chapter is not connected, but can stand on its own.
One fascinating fact not included in the book: Wieliczka Salt Mine, located in Poland. A church has been carved out of salt in the salt mine. Go ahead and Google it, the images are amazing.