Mix the sourdough starter, water, and flour together in one bowl
Perform a series of stretch and folds to strengthen the dough
Allow the dough to ferment until it has doubled in size and become very bubbly
Plop the dough into a well-oiled cast iron skillet
Dimple the dough to create little divots
Sprinkle the dough with flaky salt
Bake until golden brown
