In a large bowl, add the sourdough starter, water and olive oil. Mix with a fork to combine. Add the flour and salt. Continue mixing with your fork until the dough becomes stiff. Then squish everything together with your hands to incorporate all of the flour. The dough will be dry and shaggy.

Cover the bowl with plastic wrap, reusable wrap or a clean, very damp kitchen towel. Let rest (autolyse) for 30 minutes or up to 1 hour, if preferred.

After the dough has rested: return to the bowl and work the dough into a rough ball, about 15 seconds.

Cover the bowl with lightly oiled plastic wrap (alternatively, transfer the dough to a high-sided dough tub with lid and measuring marks). Let rest in a warm spot to rise, ideally 70-75 F. The dough is ready when it no longer looks dense and has almost doubled in size.

During bulk rise, you have the option to perform a series of ‘stretch & folds’ to strengthen the dough. Start 30-45 minutes into the bulk rise. Gather a portion of the dough, stretch it upwards and then fold it over itself. Rotate the bowl ¼ turn and repeat this process until you have come full circle to complete 1 set. Do this once or twice spaced about 1 hour apart.

Remove the dough from the bowl onto a lightly floured surface. You do not need to ‘punch down’ the dough; it will gently deflate as you fold and shape it.

Starting at the top, fold the dough over toward the center. Give it a slight turn, and then fold over the next section of dough. Repeat until you have come full circle. Then flip the dough over and place it seam side down. Using your hands, gently cup the sides of the dough and rotate it, using quarter turns in a circular motion.

Now the dough needs to rise again, but for a shorter period of time. Coat the bottom of your Dutch oven with cornmeal. Alternatively, use parchment paper to prevent sticking. Place the dough inside of the pot, cover and let rise for about 30 minutes to 1 hour.

Right before your bread goes into the oven, make a shallow slash about 2-3 inches long (or more) in the center of the dough.

Place the bread into the oven on the center rack (lid on) and reduce the temperature to 400° F/ 204° C. Bake for 20 minutes. Remove the lid, and continue to bake (uncovered) for an additional 40 minutes or until deep, golden brown.

Remove the bread from the oven, and cool on a wire rack for at least an hour before slicing.