In a small bowl stir together the warm water, sugar, and yeast. Stir to dissolve and set aside.
In a large bowl dissolve baking soda with the 1 1/2 teaspoons warm water. Add the warm milk, salt, and one cup of the flour. Beat with a wire whisk until smooth. Beat in yeast mixture and remaining flour. Batter should be thick, sticky, and smooth.
Prepare 2 pie pans with non-stick spray. Dust pans with cornmeal. Place 1/2 dough in each pie pan. Batter will spread during rising time. Spray top of dough with non-stick cooking spray. Cover and let rise for one hour.
Repeat spraying of bread with non-stick cooking spray. Bake in a preheated 375 degree F (190 degrees C) for 20 minutes.