Rustic white sourdough loaf

water 52.2% , tapioca 23.9% , yeast 12.0% , rice flour 6.0% , corn starch 3.0% , psyllium 1.5% , powdered egg white 0.7% , corn flour 0.4% , sugarcane fiber 0.2% , potato starch 0.1% , buckwheat flour 0.0% , sugar 0.0% , Thickener 0.0% , E412 0.0% , spirit vinegar 0.0% , canola oil 0.0% , rice starch 0.0% , concentrated grape juice 0.0% , iodised salt 0.0% , cassava flour 0.0% , Acidity regulator 0.0% , E500i 0.0% , rice bran 0.0%