Dried wheat sourdough yeast powder from organic farming. Sourdough yeasts are obtained through a 50-day fermentation process before being dried and packaged. The freeze-dried sourdough yeast contains a very small percentage of dry yeast, which acts as a starter to initiate the process. The result in leavening will be a lactic (mother) fermentation for the majority of microorganisms, with a small percentage being acetic. However, they are Saccharomyces Cerevisiae. Origin: France Storage instructions: store in a cool, dry place Organic certification: ICEA