It is a traditional bread making technique that dates back to ancient Egypt. The bread is naturally leavened with natural microorganisms (wild yeast) rather than commercial yeast. Sourdough is effectively a naturally fermented food, the probiotics benefit your gut.
With our long fermentation process (48 hours), most people (non-coeliac) find it very easy to digest. Furthermore, the lactic acid naturally produced in sourdough decreases phytic acid which in turn improves the body’s ability to absorb nutrients. Sourdough (including white) is naturally lower GI compared to commercial bread due to the natural acidity.
There are no preservatives, just natural ingredients. And as the name suggests, there is a natural mild sour flavour, delicious!