At Home: A Short History of Private Life

by Bill Bryson

Making food out of plants is hard work. The conversion of wheat, rice, corn, millet, barley, and other grasses into staple foodstuffs is one of the great achievements of human history, but also one of the more unexpected ones. You have only to consider the lawn outside your window to realize that grass in its natural state is not an obvious foodstuff for nonruminants such as ourselves. For us, making grass edible is a challenge that can be solved only with a lot of careful manipulation and protracted ingenuity. Take wheat. Wheat is useless as a food until made into something much more complex and ambitious like bread, and that takes a great deal of effort. Somebody must first separate out the grain and grind it into meal, then convert the meal into flour, then mix that with other components like yeast and salt to make dough. Then the dough must be kneaded to a particular consistency, and finally the resulting lump must be baked with precision and care. The scope for failure in the last step alone is so great that in every society in which bread has featured, baking has been turned over to professionals from the earliest stages.