Sally Fallon’s Nourishing Traditions, which contains a massive amount of great information and tons of recipes. I mostly disagree with the author about meat and dairy (which she embraces, in fermented and organic forms), in light of The China Study’s implications, as well as a large body of other research documenting the virtues of avoiding animal proteins. But I agree with everything else she promotes, and the book is worth owning just for the fermented foods information and recipes, where Fallon is the reigning authority.