Vegans can eat sourdough bread and never ingest a shred of animal products  As long as you are comfortable with wild yeast organisms culturing in your bread

Using yeast fungus organisms in baking are not a problem for most vegans   Yeasts are not animals since yeast does not have a nervous system  Yeast fungus is not capable of registering pain so it is not cruel to use it

Sourdough breads often use only flour water and salt along with wild yeast organisms captured in the air of your kitchen

Yeast is captured, grown in a culture and eventually killed through the baking process to make sourdough

Vegans can eat sourdough bread and never ingest a shred of animal products

If your starter ingredients are only flour and water, you are using a vegan starter

Some sourdough bread recipes include animal by products  Milk, butter and honey are sometimes used in sourdough  These ingredients are not considered vegan

If you want to be absolutely sure you are getting a vegan sourdough product, bake your own sourdough bread  This will ensure you have the purest vegan ingredients