Sift the flour twice, removing the coarsest bran particles.
Mix the flour with 375g water until fully combined. Cover and refrigerate overnight.
Feed your starter and allow it to peak. Refrigerate until morning.
The Next Morning
Remove the flour and water mixture from the refrigerator
Add 125g of active starter and 10g salt
Mix until incorporated
If using a stand mixer, knead to a windowpane
If mixing by hand, mix until incorporated and perform a series of stretch and folds or coil folds every 30 minutes during the first few hours of bulk fermentation to build strength.
Bulk Fermentation
Place the dough into a lightly oiled container and start an aliquot jar.
Keep the dough around 75–78°F.
Continue stretch-and-folds or coil folds as needed if you didn't mix in a stand mixer up front during the early stages of bulk fermentation.
Allow the dough to ferment until the aliquot jar doubles.
Trust the dough, not the clock.
Shape and Proof
Turn the dough onto a lightly floured surface.
Pre-shape and allow a short bench rest.
Shape into a boule and place seam-side up in a prepared banneton.
Cold proof in the refrigerator for several hours.
Bake
Preheat a Dutch oven to 450°F.
Turn the dough onto parchment paper, score, and bake covered for 30 minutes.
Remove the lid and continue baking until deeply golden and the internal temperature reaches approximately 205°F.