“This one goes back to the gold rush of 1896“: the only sourdough bread in the world is in our country | Science

The company Puratos from the province of Liège owns a special library. A sourdough library, and also the only one in the world. Bread was baked with leaven for centuries, but now bakers mainly use yeast. The intention of the library is not to let all those different sourdoughs go to waste.