Spray a medium bowl with cooking spray. Set aside.
In the bowl of a stand mixer fitted with the dough hook, combine flour, salt, water, and biga.
Stir to combine.
Mix on low speed for 3-4 minutes.
Increase speed to medium.
Knead for 7-8 minutes, until dough is smooth.
Turn out into prepared bowl.
Let rise at warm room temperature (78 degrees F) for 1 1/2-2 hours, until nearly doubled in bulk. Cover with plastic wrap if not using a proofing box with a water tray.
While dough if proofing, flour a round banneton with rice flour. Set aside.
When dough is proofed, turn out onto a lightly floured surface.
Fold the bottom third of the dough up toward the top.
Fold in the right and left corners.
Fold the top down to create a round.
Pinch to seal.
Turn dough over.
Using a bench knife and your hand, pull the dough into a tight round.
Place bottom side up in prepared banneton.
Let rise at warm room temperature (78 degrees F) for 1 - 1 1/2 hours until doubled in bulk. If not using a proofing box with a water tray, cover with plastic wrap, a plastic shower cap, or a tea towel.
While dough is proofing, place stone in oven and heat to 425 degrees F.
When dough is risen, turn out onto a piece of parchment paper.
Mist or lightly brush the top with water.
Sprinkle with sesame seeds.
Use a peel, or the back of a sheet pan, to slide the dough onto the heated stone.
Bake for 10 minutes.
Reduce heat to 375 degrees.
Cover loosely with aluminum foil.
Bake for an additional 20-25 minutes, until done.
Allow to cool completely before filling.