Combine the bread flour, water, and sourdough starter in a stand mixer or a mixing bowl. Stir thoroughly until all ingredients are fully incorporated. Allow the mixture to rest for one hour to begin proofing naturally—this process is known as autolyse.
3 ½ cups bread flour, 1 ¼ cups water, 3 ½ ounces sourdough starter
After the resting period, add the salt and mix the dough for 10 minutes. The consistency will be very sticky.
1 tablespoon salt
Once mixed, remove the dough from the bowl and lightly grease the same bowl. Return the dough to the bowl, cover it with plastic wrap, and let it proof for at least 2 hours, or until it has doubled in size.
Gently deflate the dough and shape it into a large ball. Since the dough is very sticky, wetting your hands can make handling easier.
Grease a Dutch oven (preferably 9 inches in size, though a larger one can be used) and place the dough inside. Let it proof for another 2 hours.
Preheat the oven to 400ºF (200ºC). Score the top of the dough, cover the Dutch oven with its lid, and bake for 45 minutes. Then, remove the lid and continue baking for another 15 minutes, or until the top is golden brown.
Allow the bread to cool before slicing. Serve and enjoy!