Pour water into a bowl and gradually add the corn meal and salt. Knead until the dough is smooth and let rest in the bowl for 3 minutes.Divide the dough into 10 portions (if desired, you can make these larger). Shape each portion into a ball, then press down to form a patty about 3 1/2" wide.
Add grapeseed oil into cast iron pan on medium heat. When hot add the patties and cook for 5 minutes a side until brown. Keep warm until all are cooked. Let cool for 10 minutes before splitting. Then open and fill as desired or serve warm to accompany a meal like any bread.