In a large mixing bowl, combine flour, salt, and yeast.
Slowly add water while mixing until a sticky dough forms.
Cover the bowl with plastic wrap and let it rest at room temperature for 18-24 hours.
Dust a work surface with flour and gently turn the dough onto it.
Fold the dough into a rectangle, then divide it into two equal pieces.
Place each piece on a floured baking sheet and let rest for 1-2 hours.
Preheat the oven to 475°F (245°C) and bake for 20-25 minutes until golden brown.