Preparation Steps:
Prepare the Pre-Ferment (Biga):
In a bowl, combine 200g of flour, 0.6g of instant yeast, 4g of sea salt, and 100g of water.
Mix until a cohesive dough forms.
Cover the bowl with plastic wrap and let it rest at room temperature for 2 hours.
Mix the Main Dough:
In a large mixing bowl or stand mixer, combine 1000g of Castelvetrano flour, the prepared pre-ferment, 18g of sea salt, 3g of instant yeast, and 750g of water.
Mix by hand or on a low mixer speed for about 10 minutes until the dough is smooth and elastic. The dough temperature should be between 78°F and 82°F (25°C to 28°C).
First Fermentation:
Place the dough in a lightly oiled bowl, cover with plastic wrap, and let it rest at room temperature for 40 to 50 minutes.
Divide and Shape:
Divide the dough into portions weighing 500-600g each.
Shape each portion into a round loaf by folding the edges toward the center and forming a tight seam.
Proofing:
Place the shaped loaves on a baking tray lined with parchment paper.
Cover with a clean towel and let them proof at room temperature for 1 hour.
Preheat the Oven:
About 30 minutes before baking, preheat your oven to 485°F (250°C).
Add Sesame Seeds:
Just before baking, lightly mist or brush the loaves with water and sprinkle sesame seeds generously over the top.
Bake:
Place the loaves in the preheated oven and bake at 485°F (250°C) for 1 minute.
Reduce the oven temperature to 400°F (200°C) and continue baking for approximately 1 hour, or until the crust is dark brown and the loaves sound hollow when tapped on the bottom.
Variations and Tips:
Flour Substitutions: If Castelvetrano or Tumminia flour is unavailable, a mix of whole wheat and bread flour can be used, though the flavor will differ from the traditional loaf.
Yeast Alternatives: Traditional Pane Nero uses a sourdough starter (lievito madre). If you have a sourdough starter, you can substitute it for the pre-ferment for added depth of flavor.
Dietary Considerations: For a lower-sodium version, reduce the salt by up to half.