More than a decade ago, Chad Robertson's country levain recipe taught a generation of bread bakers to replicate the creamy crumb, crackly crust, and unparalleled flavor of his world-famous Tartine bread. It was the recipe that launched hundreds of thousands of sourdough starters and attracted a stream of notable understudies, from Danny Bowien of Mission Chinese to Rene Redzepi of Noma. Now Robertson has teamed up with Tartine's director of bread, Jennifer Latham, to explore how superior grain and next-level flours respond to hydration and fermentation to make great bread even better. Bread Book showcases Robertson's and Latham's unparalleled knowledge and latest contribution to the craft and science of bread making.