Sourdough bread fueled the labor that built the Egyptian pyramids. The Roman Empire distributed free sourdough loaves to its citizens to maintain political stability. More recently, amidst the Covid-19 pandemic, sourdough bread baking became a global phenomenon as people contended with being confined to their homes and sought distractions from their fear, uncertainty, and grief. In Sourdough Culture, environmental science professor Eric Pallant shows how throughout history, sourdough bread baking has always been about survival. Sourdough Culture presents the history and rudimentary science of sourdough bread baking from its discovery more than six thousand years ago to its still-recent displacement by the innovation of dough-mixing machines and fast-acting yeast. Pallant traces the tradition of sourdough across continents, from its origins in the Middle East’s Fertile Crescent to Europe and then around the world. Pallant also explains how sourdough fed some of history’s most