yeast-free sourdough bread, flour, water and glass jar with dough leaven on the table. preparing yeast dough for bread

active background bacterium bake bakery baking bread breakfast bubble cook cooking cuisine culture dough ferment fermentation fermented fermenting flour food fresh glass grain healthy homemade ingredient jar kitchen leaven leavened leavening making meal mixture natural nutrition organic pastry preparation preparing raw rustic sourdough starter table water wheat white yeast yeastfree