Ingredients:
- 1/2 cup (113g) active sourdough starter
- 3 cups (360g) bread flour
- 1 1/3 cups (315ml) warm water
- 2 tsp (12g) fine sea salt
Instructions:
- Combine the active sourdough starter and warm water in a bowl, whisking until milky.
- Stir in the bread flour and salt until a shaggy dough forms and no dry flour remains.
- Cover the dough with a damp cloth and let it rest for 30 minutes.
- Perform stretch and folds every 30 minutes for 2 hours by pulling the edge of the dough up and folding it into the center until the dough is smooth and elastic.
- Turn the dough onto a floured surface, fold the edges toward the center to create tension, and rotate it into a tight, smooth boule.
- Place the dough upside down in a floured bowl or proofing basket, cover, and refrigerate for 12–14 hours.
- Preheat the oven and a Dutch oven to 450°F (232°C) for 45 minutes.
- Flip the cold dough onto parchment paper and score the top with a deep slash.
- Place the dough and parchment into the hot Dutch oven, cover with the lid, and bake for 20 minutes.
- Remove the lid and bake for another 20–25 minutes until the crust is a deep mahogany-brown.
- Cool on a wire rack for at least 1 hour before slicing.