The industries first book dedicated to yeast fermentation in beer. A book that will change homebrewing for many years to come.Chris White of WhiteLabs and Jamil Zainasheff take you on a path of understanding the powers of fermentation and all its mysteries. Anyone can design a recipe and make wort, but can you properly ferment a beer? This book will tell you everything about yeast and more. A must have for all homebrewers.