As I started reading this book, I thought to myself that Mark Kurlansky had performed a miracle, and actually made the subject of the history of salt quite interesting.
However, as you delve deeper into the book, you appreciate two things. First, just how important salt was in history - Kurlansky isn't exaggerating when he says wars have been fought, lost and won over salt. Second, how the author does actually have a very good writing style about him - the numerous fascinating facts he brings out may not have been quite so fascinating if told by a different author.
For me, two things put the book into perspective. These two things are explained about two-thirds of the way through the book, and suddenly make you realise why salt has been so important to society, governments, armies, etc.etc.etc throughout history - and why we can take it for granted now.
More than an epic history of salt (and it does actually work on that level too - such is Kurlansky's depth of research), this is packed so full of great little facts that it's also just a great read. Recommended for anyone who wants to understand more about a substance that's so common, it's very easy to take for granted these days. You just won't look at food in the same way again...