12:00 PM – Preshaping: The dough should feel significantly lighter, showing clear signs of gaseous fermentation and tiny air bubbles on the skin surface. Tip it out gently onto a slightly floured workspace.
Using a bench scraper, divide the dough cleanly into 2 equal parts (roughly 220–230g each). Round each piece into a loose ball with your scraper and let them rest completely uncovered for 30 minutes to relax the gluten.
12:30 PM – Final Baguette Shaping: Turn one rested dough round over onto your floured surface and pat it down gently into a flat rectangle.
Fold the upper third of the rectangle down toward the center, and press down firmly along the seam with your palm to lock it in. Next, fold the bottom third up over that, pressing down firmly again to flatten.
Use your thumb to press a clean, deep crease right down the middle of the dough rectangle, then fold the entire log in half along that line.
Seal the outer edges tightly with your fingers. Roll the dough log back and forth under your palms, starting from the center and moving outward, until it stretches to your desired length (about 20–24 cm long if baking in a Challenger pan, or 24–28 cm if using a wider baking stone).
Generously dust your proofing couche or heavy towel with whole grain flour. Transfer the shaped baguette logs onto the fabric seam-side up, bunching the fabric up between them to form supporting walls. Cover with a kitchen towel and let proof for 1 hour at a warm 78°F (25°C).
The Poke Test: Give the dough a gentle poke; if the indentation springs back slowly and leaves a tiny dimple, it is ready to bake. While they finish proofing, preheat your oven to 500°F (260°C) with a baking stone on the middle rack and an empty iron tray on the bottom rack for 1 full hour.
The Launch: Flip the proofed baguettes gently onto a sheet of parchment paper so the smooth, sealed side faces downward. Score the tops with 3 to 4 long, clean, shallow diagonal cuts. Gather 10 ice cubes.
Transfer the baguettes on the parchment directly onto the roaring hot baking stone, immediately dump the ice cubes into the empty iron tray below to unleash a heavy cloud of steam, and shut the door. Bake with steam at 500°F (260°C) for exactly 10 minutes.
Lower the oven temperature to 475°F (246°C), carefully remove the steam tray, and continue baking bare for an additional 15 minutes until the crust turns thin, crackly, and deep golden brown. Let cool for 1 hour before slicing!