01 - Combine bread flour and water in a large mixing bowl, mixing until just incorporated. Cover the bowl and allow the mixture to rest for 1 hour at room temperature to develop gluten structure.
02 - Add active sourdough starter and fine sea salt to the autolyse mixture. Mix thoroughly by hand or with a dough hook until the dough becomes cohesive and evenly hydrated.
03 - Complete 4 sets of stretch and fold technique at 30-minute intervals over 2 hours, keeping the dough covered between each set to develop strength and structure.
04 - Cover the bowl and let the dough ferment at room temperature for 4–6 hours, or until approximately doubled in volume with visible bubble formation.
05 - Turn the dough onto a lightly floured surface and shape into a tight round or oval loaf, creating surface tension.
06 - Transfer the shaped dough to a floured proofing basket with seam side facing up. Cover and refrigerate for 8–12 hours to develop flavor through cold fermentation.
07 - Preheat oven to 450°F with a Dutch oven inside for at least 30 minutes to ensure thorough heating.
08 - Gently invert the dough onto parchment paper. Score the top surface with a sharp blade. Transfer the loaf with parchment into the preheated Dutch oven, cover, and bake for 20 minutes.
09 - Remove the Dutch oven lid and continue baking for an additional 20 minutes until the crust achieves a deep golden brown color.
10 - Transfer the baked loaf to a wire rack and allow it to cool for at least 1 hour before slicing to ensure proper crumb structure.