Feed the sourdough starter 4–12 hours before baking until it becomes active, bubbly, and doubled in size.
In a large mixing bowl combine water, active starter, flour, and salt. Stir until all flour is hydrated and a shaggy dough forms.
Cover the bowl and allow the dough to rest for 30 minutes to hydrate the flour and begin gluten development.
Perform the stretch-and-fold method by pulling one edge of the dough upward and folding it toward the center. Rotate the bowl and repeat until four folds are completed.
Cover the dough and allow it to bulk ferment in a warm place until it roughly doubles in size, about 6–12 hours.
Transfer the dough to a lightly floured surface and shape it into a round boule, creating surface tension by folding edges inward and rotating the dough.
Place the shaped dough into a banneton or proofing basket and refrigerate for an overnight proof of about 12–15 hours.
Preheat a Dutch oven to 500°F for 1 hour.
Remove the dough from the refrigerator, place it on parchment paper, and score the top with a razor blade.
Transfer the dough with parchment into the hot Dutch oven. Bake covered for 20 minutes.
Remove the lid and continue baking uncovered for 20–25 minutes until the crust becomes deep golden brown.
Remove the bread from the oven and allow it to cool for at least 1 hour before slicing.