In a medium bowl, combine bread flour, yeast, and water. Stir until blended. Cover and let rest at room temperature overnight (about 12-18 hours) until bubbly.
Add salt to the dough. Stir just until incorporated.
Generously flour a work surface and your hands. Scrape the dough onto the floured surface. Gently shape into a rectangle.
Fold the dough into thirds (like a letter). Flip it seam-side down. Cover and let rise for 1-2 hours until puffy.
Preheat oven to 450°F (230°C). Place a baking stone or inverted baking sheet in the oven to preheat.
Gently transfer the dough onto parchment paper. Use floured hands to stretch it slightly into a loaf shape.
Slide the parchment with the dough onto the hot baking stone or sheet. Bake for 22-25 minutes, until golden and crisp.
Let cool completely on a wire rack before slicing.