In a large mixing bowl, add the flour and water. Mix well, cover, and let sit for 30 minutes.
Add the starter and salt. Mix well until fully incorporated. Cover, let sit for 15 minutes.
Perform a series of stretching and folding every 15 minutes the first hour and every 30 minutes the second hour.
After the stretching and folding series are all complete, cover and allow to bulk ferment for 4-8 hours.
Shape the dough on a lightly floured surface. Do this by pulling the corners of the dough into itself. Turn the dough over and drag across the workstation to build tension and seal the seam.
Prepare a banneton basket. I place a tea towel in the basket and generously flour it.
Place the dough, top side down, into the basket. Allow to rise for 1-2 hours, or, place in the fridge and bake the next day.
Preheat a dutch oven to 450 degrees F.
Turn the dough onto a piece of parchment paper. Slash the top with a very sharp knife or razor.
Carefully remove the dutch oven from the oven, remove the lid, and place the dough on the parchment paper into the dutch oven.
Replace the lid and place in the oven for 20 minutes with the lid on.
Remove the lid and continue to bake for 15-20 minutes or until deeply golden brown.
Carefully remove the loaf and place on a cooling rack.
Allow to cool completely before slicing.