Combine bread flour and salt in a large bowl. Set aside.
In a medium bowl combine water, starter, olive oil, and honey. Whisk until evenly incorporated.
Add wet ingredient mixture to dry ingredients mixture. Mix just until a shaggy dough forms. Cover loosely with a towel or plastic wrap and let sit for 20-30 minutes.
Stretch and fold the sides of the dough into the middle until the dough becomes a smooth ball. Avoid overworking the dough, stop once all the remaining dry bits are incorporated.
Transfer dough to a clear bowl or container. Mark the position of the top of the dough with a washable marker or rubber band. Cover loosely with plastic wrap or a towel and proof until doubled in volume, about 8-12 hours.
Once dough has doubled punch it down and, again, stretch and fold the sides of the dough into the center to form a ball. At this point you may immediately move on to the next step of shaping the dough, or cover the dough and refrigerate 8-24 hours (or more). Refrigerating the dough (known as cold fermentation) will increase the flavor of your pizza crust.
Grease a 12-inch cast iron skillet with about 2 tbsp olive oil and sprinkle with about 1-2 tbsp cornmeal. Place dough ball in the center of skillet. Using both hands, push your finger tips into the dough, working from the middle out to stretch the dough to the sides of the pan. If dough starts to resist further stretching, stop and allow the dough to rest for 5 minutes (you may have to do this 3-4 times before it reaches the edge of the skillet). Cover and allow to proof until puffy and roughly doubled in volume, about 2-4 hours.
Preheat oven to 475° with a shelf in the center and one at the top. Top pizza with sauce, leaving about 1-inch around the edge uncovered. Sprinkle mozzarella cheese over the entire pizza (including the un-sauced crust). Add additional toppings as desired.
Place skillet on a burner over medium heat. Once the oil around the sides of the dough is bubbling, about 3-4 minutes, remove pan from heat.
Transfer skillet to the middle rack of the oven. Bake for 7 minutes, then move to the top rack and bake for 3-5 minutes more, or until the top of pizza is golden-brown. Carefully lift the pizza with a spatula to check that the bottom is golden-brown, if not return to the middle rack until it is.
Remove pizza from skillet with a spatula. Allow to cool for about 5 minutes then cut and serve.