The Original San Francisco Sourdough Bread was by far the best sourdough I ever got to eat. The company had to close when one of it's delivery truck drivers hit and killed a pedestrian. It did not have enough insurance at the time. Their starter died during the closure and was lost forever. Boudin took over the market since and is good but not the same.
Acme Bakery in SF makes amazing breads, boy do I miss that!