Mix the Ingredients
In a large bowl, combine the water, sourdough starter, and salt. Stir until evenly mixed.
Add the flour and mix until combined, using your hands to fully incorporate any dry bits.
Cover the bowl and let the dough rest for 30 minutes.
Stretch and Fold
After resting, perform one set of stretch and folds:
Grab one edge of the dough, stretch it upward, then fold it over the opposite side.
Rotate the bowl 90° and repeat for a total of 4 folds.
Cover and let rest for 20 minutes.
Repeat this process three more times over the next hour.
Bulk Fermentation
Cover the bowl and let the dough rise at room temperature for 3 to 4 hours, or until nearly doubled in size.
Shape the Dough
Transfer the dough to a lightly floured surface.
Shape it into a tight round by folding the dough’s edges toward the center and pinching them together.
Repeat from all sides to create a smooth ball.
Final Proof
Line a banneton or bowl with a floured tea towel.
Place the dough seam-side up in the basket, cover with a cloth or plastic, and let rise for 2 hours at room temperature.
Preheat the Oven
In the final hour of proofing, preheat your oven to 460°F (238°C) with the Dutch oven inside.
Score and Bake
Flip the dough onto parchment paper so the seam side is down.
Score the top with a bread lame or sharp knife in a crisscross or decorative pattern.
Place the dough (with parchment) into the hot Dutch oven.
Add a splash of water under the parchment to generate steam.
Cover and bake at 460°F (238°C) for 30 minutes.
Remove the lid and reduce heat to 440°F (227°C); bake for another 10 minutes until golden and crisp.
Cool
Transfer the loaf to a wire rack and cover with a damp towel.
Let cool for at least 1 hour before slicing to allow the crumb to set.
Notes
To speed up rising in a cool kitchen, place the dough in a slightly warm (but off) oven or near a heat source.
Dough is ready when it has doubled and passes the poke test (a gentle press springs back slowly).
Store bread in a paper bag at room temperature for up to 2 days or freeze for longer storage.