I very much enjoyed this book on world history, roled like a ball of yarn around the role salt played in this history. I think that different readers will enjoy different aspects of the book. There is something for everyone. I particularly enjoyed the sections on Chinese ancient history, on French salt production on Noirmoutier and Ile de Ré and also the perspective of how French salt taxes (gabelle) influenced the French revolution. This was interesting becuase other books stress the role of the price of bread rather than these salt taxes. Other people may be interested in the role salt played in the American Revoltion, Morton Salt Company, German and Austrian salt mines, how a lack of Scandinavian salt influenced the Vikings, hydraulic drilling and gas deposits or the numerous old recipes provided (the original ketchup, tomato ketchup, the difference betwwen the Swedish herring surströmming versus sill). I believe there is something here for everyone. The author makes the information so interesting that it fastens in your head! Well hopefully at least for awhile!