30 minutes after the last folding, form the final dough ball:
- Sprinkle the cookie sheet with about 1 Tbsp flour.
- Turn the dough from the plastic container onto the floured cookie sheet.
- Wet hands so the dough will not stick to them. The moisture also makes the folded dough stick better at the seam.
- Gently pat dough into a rounded rectangle of roughly uniform thickness.
- Form the final ball shape by folding the dough from each of four sides and then sealing the seam.
- Line the proofing basket with a cloth and then sprinkle the cloth with about 1 Tbsp flour.
- Lift the dough ball from the cookie sheet and place into proofing basket with the seam down.
- Fold the ends of the cloth over the dough ball to cover it.