Rating: 4/5 Susan G. Purdy, Pie in the Sky: Successful Baking at High Altitudes; 100 Cakes, Pies, Cookies, Breads, and Pastries Home-Tested for Baking at Sea Level, 3000, 5000, 70000, and 10000 feet (and Anywhere in Between) (New York: William Morrow, 2005). If you bake, and you live above 3000 feet, then this book is...