So, taking a leaf out of the Sullivan St. bakery, I decided that preheating a kind of pan would be the best way to manage the baking process. I have an old cast iron dutch oven about 10" in diameter. So, what kind of dough? What ratios? How long? What temperature. It turns out that it is a pretty simple thing to do and the results have been well worth while.
550 gm bread flour
40gm whole wheat flour
10gm light rye flour
400 gm water
5 gm yeast
2t (yes everything else was by weight!) kosher salt
Proof the yeast in room temperature (or slightly warmer) water. Add to the flours, mix using a spatula until it is shaggy. Cover and leave to stand for about 45 minutes. After it has rested for a while, add the salt and then knead ( 12 minutes speed 4 in kitchenaid mixer). Turn out into a lightly oiled bowl, cover and allow to rise for about 45 minutes. It will almost have doubled. Take the dough out, stretch it, form into a ball and return to the bowl, cover again and leave until doubled.
Once it has doubled in size again, turn on to a lightly floured board and form into a ball. Making sure that the outside of the ball is stretched, forming a skin. Turn the ball seam side up into a round basket lined with floured cheesecloth. Meanwhile heat the grill and a cast iron pan at 450 for at least 30 minutes.
Once the dough has rested and returned to springiness, turn it out into the cast iron pan. Bake on the grill for 450F for 25-30 minutes.