Mix the sponge ingredients together. Cover and let it sit at room temperature 3 to 4 hours or overnight.
Dough
Stir down the sponge. In a large bowl, combine dough ingredients together and stir in the sponge.
Add seeds, grains, or herbs of your choice. Knead the dough until smooth and elastic, approximately 10 minutes.
Shape the dough into a ball and put it into a large, well oiled bowl. Turn once to coat both sides. Cover and allow to rise for 1 1/2 to 2 hours.
Lightly grease a baking sheet, or cover it with parchment paper. Turn the dough out onto the baking sheet, and form it into a ball. Gently cover the dough with oiled plastic wrap or a kitchen towel. Allow it to rise for 1 more hour. Preheat the oven to 450 °F.
Gently but firmly score the dough across the top and then spritz it with water. Bake the bread for 30 to 35 minutes, or until it's golden brown or until it registeres 205 to 210 °F when tested with an instant-read thermometer.
Remove the loaf from the pan and allow t tto cool completely on a cooling rack prior to slicing.
This recipe was calculated using the exact brands and measurements I used to make this recipe. If you are following a strict diet please note changing anything will cause the nutritional info to change. My calculations are intended as a guide only.