Real sourdough bread is fermented for a very long time (anything from 6 to 48 hours!)
Another extraordinary reaction happens during this long fermentation time the dough has.
Sourdough is Full of Friendly Bacteria! Sourdough bread uses natural yeasts found in its sourdough starter to make it rise.
Sourdough bread uses wild bacteria and yeasts naturally found in the flour and its surrounding environment to ferment the dough.
As long as you are eating real sourdough bread, you are eating only 3 simple ingredients: flour, water and salt.