Micro-histories books

These books are for anyone who said, "I wonder who decided that eating raw fish was a good idea?" or "I know! I'll take this little green bean, throw it in the fire, grind it up, and then filter water through it."

I'm really tempted to read, "Salt: A World History."

On the one hand, it's cool that someone can track the history of things taken for granted. On the other hand it's a little disturbing that someone doesn't have more important things on their mind than salt!