Mix the sourdough starter and water in a large bowl.
Add the bread flour and salt, and mix with a dough whisk or your hands until a shaggy dough forms.
Knead the dough in the bowl until it becomes smooth and elastic.
Place the dough in a banneton basket or a floured tea towel in a bowl, and let it rise for several hours or overnight.
Preheat a dutch oven, bread oven, or roasting pan in the oven.
Turn the dough out onto a peel or baking sheet, score the top, and bake in the preheated oven for 30-45 minutes, until the crust is golden brown.
