Make sponge- rise for 30 minutes.
Make dough. Greased bowl, covered, 1 hour or doubled.
Put in greased pan, make 3 sets of dimples. Cover, rise 45 minutes.
Preheat to 425 with baking stone. Re-dimple, add topping.
Reduce heat to 400, bake 25 minutes.. use ice or bowl of water, or mist.