01 - In a large bowl, combine the flour and water until just incorporated. Cover the bowl and allow the mixture to rest for 1 hour to develop gluten structure.
02 - Add the active sourdough starter and sea salt to the autolysed dough. Mix thoroughly until the ingredients are fully incorporated and the dough becomes cohesive.
03 - Perform 4 sets of stretch and folds at 30-minute intervals over 2 hours. Keep the dough covered between each set to build strength and structure.
04 - Cover the bowl and allow the dough to ferment at room temperature for 4–6 hours until approximately doubled in volume.
05 - Turn the dough onto a lightly floured work surface. Shape into a tight round or oval boulevard, creating surface tension.
06 - Transfer the shaped dough to a floured proofing basket or banneton, seam side up. Cover and refrigerate for 8–12 hours for cold fermentation.
07 - Position a Dutch oven in the oven and preheat to 450°F for at least 30 minutes to ensure proper heat retention.
08 - Gently invert the dough onto parchment paper. Score the top with a sharp lame or knife. 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 cooling rack and allow it to rest for at least 1 hour before slicing to ensure proper crumb structure.