Writers, nutritionists, doctors, chefs and Michelle Obama have all been promoting a hot new diet: home-cooked food. “People who cook eat a healthier diet without giving it a thought,” Michael Pollan recently told Mark Bittman, both authors and advocates of the cook-it-yourself diet. “It’s the collapse of home cooking that led directly to the obesity epidemic.” The magic of the diet, its advocates say, is that it doesn’t mean skimping on portions or going without meat, eggs, cheese, alcohol or dessert.

At the very least, cooking at home lets us know what's in what we're eating.