Last Chance to Eat: The Fate of Taste in a Fast Food World by Gina Mallett (thanks to Jessa for the heads-up). This sounds as though it's going to be as good a read as Julian Barnes' The Pedant in the Kitchen (not available in the US for some obscure reason).
The first book I read that was about cooking and a delicious read was Susan Branch's Vineyard Seasons. It's pretty to look at, while the Barnes book is funny and gives you a new appreciation for the art of cooking. I can't wait to read the Mallett!