Mix all ingredients in a stand mixer with a dough hook. Knead for 10–15 minutes, until the dough is soft, stretchy, and passes the windowpane test.
Form into a smooth ball and place in an oiled bowl. Cover and let rise at 27°C (80°F) for 5–7 hours, or until doubled.
Turn out onto a floured surface. Divide in two. Let one piece rest while you shape the first into a loaf. Fold and spin until tight.
Place seam-side up in a floured banneton. Cover and refrigerate overnight (or proof 1–2 hours at room temp for same-day baking).
Preheat your Dutch oven at 250°C (500°F) for 1 hour.
Turn the dough onto parchment, score with a bread lame, and carefully transfer into the Dutch oven.
Bake 20 minutes covered, then 15–20 minutes uncovered at 235°C (450°F).
Cool on a wire rack for at least 1 hour before slicing.