Ingredients
Method
- Mix the flour and water; rest 30 minutes. Add starter and salt, mix until combined.
- Cover and ferment 4 to 5 hours at room temperature, folding every 30 minutes for the first 2 hours, then coil folds as needed, until dough is smooth and domed.
- Shape into a boule, tighten surface, and place seam-side up in a rice-floured banneton.
- Proof at room temperature 1 to 2 hours or refrigerate 12 to 16 hours. Preheat oven to 500°F with Dutch oven inside during the last 45 minutes.
- Mix paint: 1 tbsp flour, 1 tbsp water, cocoa until thick cream consistency. Turn dough onto parchment, paint design, then score.
- Transfer to hot Dutch oven, lower to 450°F, bake covered 25 minutes, then uncovered 20 to 25 minutes until deep amber. Cool on rack at least 1 hour before slicing.
Notes
The active time here counts only hands-on moments; fermentation and proofing happen largely unattended. If you refrigerate the shaped loaf overnight, the paint will be easier to apply, and the flavor will develop a more pronounced sour note.
