White Sourdough Bread (Giovanni) Free The only difference between this bread and the whole wheat sourdough is that it contains only white flour, with the exception of the rye flour present in the starter. With its delicious taste and airy texture it, too, is a favorite. Need Help? Contact Us Leave Feedback Contact Us Enter your contact details or email form shortcode here. (Text/HTML/Shortcodes accepted). Leave Feedback Enter your feedback modal content here. (Text/HTML/Shortcodes accepted).