My favorite food books are the ones that demonstrate the soul deep role of food in life -- beyond physical nourishment or even creating cooking. Here are three that come to mind:
Julie and Julia: My Year of Cooking Dangerously by Julie Powell
Powell was a secretary in New York who decided to make every recipe in Julia Child's Mastering the Art of French Cooking in 365 days. Powell's writing is honest, earthy and very funny. I just saw her discuss and read from her book at the Tattered Cover, and she was as engaging in person as in her writing.
The Food of Love by Anthony Capella
A novel about food, love and life in Italy, completely sensuous and very sweet.
Stolen Figs: And Other Adventures in Calabria by Mark Rotella
Rotella searches for his roots and finds them in a piece of the world lost in time.