Here are a few of my favorite books on food, cooking, herbalism, nutrition and healing, in no particular order of preference.
Full Moon Feast: Food and the Hunger for Connection — Jessica Prentice
Medicine Grove: A Shamanic Herbal — Loren Cruden
Fat: An Appreciation of a Misunderstood Ingredient, with Recipes — Jennifer McLagan
Seven Herbs: Plants as Teachers — Matthew Wood
Wild Fermentation: The Flavor, Nutrition, and Craft of Live-Culture Foods — Sandor Ellix Katz