Book excerpt: Donuts are America's favorite treat and, in Donut Nation, Ellen Brown travels the United States in search of the best donut shops. From beloved mom-and-pop establishments and roadside cafes to innovative boutiques and artisanal restaurants, there are more than seventy hand-crafted donut shops to take you from Maine to Arizona. Perfect for the cross-country explorer or home chef, it also includes mouthwatering recipes for donuts like Orange-Pistachio Cake, Maple Bacon, and Strawberry-Buttermilk. Donut Nation is a one-of-a-kind trip to the heart of an American classic.