I always wanted to write a book about a common food that becomes a commercial commodity and therefore becomes economically important and therefore becomes politically important and culturally important. That whole process is very interesting to me. And salt seemed to me the best example of that, partly because it's universal.

Things that become important to economies become ritualized and become deified. Because I'm Jewish, I always thought it was interesting that in Judaism, salt seals a bargain, particularly the covenant with God. Some people, when they bless bread, they dip it in salt. Same thing exists in Islam.

There's a lot about the early history of salt that isn't known, including who first used it and when or how it was discovered that it preserved food. We were sort of handed, in history, this world where everyone knew about salt. And it's not clear exactly how that developed.

Mark Kurlansky Quotes