In a large bowl stir together starter and warm water to dissolve starter.
Add salt and stir to dissolve into starter water.
Add flour and vital wheat gluten. Stir to combine until there's no dry flour in the bowl. Dough will be shaggy and very sticky.
Cover bowl loosely with plastic wrap or a dish towel.
Place bowl in a warm spot for 12-16 hours. The oven is the perfect spot for this.
In the morning remove bowl of dough from the oven. The dough should have doubled in size.
Place a Dutch oven pot in the oven and preheat to 450℉.
Cover work surface liberally with flour.
Turn dough out onto floured surface.
Flour hands and pull dough then fold in half.
Use your hands to form the dough into a round boule, stretching the dough from the center out and under the loaf, turning the loaf a quarter turn as you go. Put more flour on your hands if the dough sticks to them.
Once the loaf is formed into a round boule, transfer the dough onto a piece of parchment paper and cover it with a bowl.
Let the dough rest for 1 hour while the oven is preheating.
Dust the top of the loaf with flour.
Use a sharp knife to score the length of the loaf with a ¼ inch deep cut.
OPTIONAL: Use a razor blade to score the loaf with decorative cuts if desired.
Carefully (pot will be screaming hot) remove Dutch oven pot from the oven. Grab the four corners of the parchment paper and lower dough into the pot.
Put lid on top and place in the oven.
Immediately reduce heat to 400℉ and bake loaf for 40 minutes.
Remove lid and bake for an additional 8-10 minutes to brown the crust.
Cool loaf on a wire rack for a minimum of 1 hour before slicing into it.