Food is at the center of national debates about how Americans live and the future of the planet. Not everyone agrees about how to reform our relationship to food, but one suggestion rises above the din: home-cooked meals. Amid concerns about obesity and diabetes, unpronounceable ingredients, and the environmental footprint of industrial agriculture, food reformers implore parents to slow down, cook from scratch, and gather around the dinner table. Voting with your fork, they argue, will lead to happier and healthier families. But is it really that simple? Informed by extensive interviews and...