airy, chewy, crispy ciabatta rolls - 100% leavened naturally with sourdough
Repeat the stretches and folds 3 more times for a total of 4 sets, every 30 minutes. You can also do the coil-fold method which works really well with a higher hydration dough like ciabatta. After the last stretch and fold, let the dough bulk ferment at room temperature for another 2-3 hours.
Then, place the dough in a lightly oiled airtight container with straight sides, like a rectangular Rubbermaid container. Place the dough in the fridge overnight or at least 12 hours up to 18 hours.
The next day, generously flour your work surface using a small strainer for even coverage. Invert the container on the floured surface, and let the dough slide out. Generously flour the top of the dough as well. Use a bench scraper to scoot the edges in to form a large rectangle. Use the bench scraper or a sharp chef's knife to cut the dough in 6 or 8 rectangular rolls.
Line a large baking sheet with a clean tea towel (or a couche). Sprinkle the towel generously with flour. Carefully lift the rolls onto the baking sheet. Lift the towel up gently between each roll. Sprinkle the rolls lightly with flour, and cover with a clean kitchen towel. Let proof for 30 minutes while the oven heats up. Meanwhile, preheat the pizza stone in the oven at 450° F. Place a small metal baking pan or cast iron skillet into the oven to heat as well (for the steam).
Very carefully, pour 2 cups of hot water into the preheated pan in the oven. There will be a big burst of steam so be very careful, and wear thick protective oven mitts. Close the door right away to keep the steam inside the oven.
Very carefully transfer the rolls from baking sheet onto a large piece of parchment paper, spacing them just slightly, but they should be close together. Then use a pizza peel, or the back of baking sheet to slide under the parchment paper with the rolls on top. This will help you launch them into the hot oven and onto the hot pizza stone quickly.
Carefully open the oven door (there will be hot steam). Slide the parchment paper with the sourdough ciabatta rolls onto the hot pizza stone. Bake for 15 minutes. Then, carefully remove the pan with the water. Bake for another 10-12 minutes until golden brown and crisp.
Allow to cool completely before slicing, at least 2 hours.