Combine flour and salt in a large bowl
Dissolve yeast in 2 tablespoons warm water with pinch of flour
Mix yeast mixture with flour and remaining water until shaggy dough forms
Cover and let rise for 12-18 hours until doubled and bubbly
Scrape dough onto floured surface and shape into a ball
Place dough on parchment paper and let rise for 2 hours
Preheat Dutch oven at 450°F (230°C) for 30 minutes
Place dough in Dutch oven using parchment paper
Score the dough, cover, and bake for 30 minutes
Remove lid and bake for another 15-20 minutes until golden
Cool completely on a wire rack before slicing