Mix 385g warm water with 120g active sourdough starter
Add 500g bread flour and 10g fine sea salt to the mixture
Knead and develop the dough
Shape the dough into ciabatta rolls
Let the rolls sit for 45-60 minutes for a second rise
Preheat oven to 475F with a baking sheet or cast iron skillet inside for at least 20 minutes
Place ciabatta rolls in the oven
Add 1 cup of water into the hot cast iron or onto the baking sheet and close the oven immediately to create steam
Bake for 10 minutes at 475F
Reduce heat to 450F and bake for another 10-12 minutes until the tops are golden brown
Remove from oven and cool
