Does French Bread Contain Dairy? Is French Bread Vegan?

French bread has the perfect crunchy crust and soft, fluffy interior. It is made by using a levain, which is a type of sourdough starter. Levain can be combined with yeast or another wild yeast in order to create breads that use natural leavening agents. Tasters said that the levain gives French bread its tangy flavor and distinct taste from other types of bread, such as Italian and rye.