In a large bowl, combine 1/4 cup of water and the yeast. Allow to sit for 5 minutes until foamy.
Add 3 cups of flour and the remaining 1 1/2 cups of water to the yeast mixture. Stir until a shaggy dough forms.
Cover the bowl with a damp cloth and let it rest for 20 minutes. This allows the flour to absorb the water.
Add the remaining 1 cup of flour and salt to the dough. Mix until combined. Transfer the dough to a well-floured surface and knead for about 10 minutes, until smooth and elastic.
Place the dough in a lightly oiled bowl, cover with plastic wrap, and let it rise at room temperature for 1 1/2 hours, or until doubled in size.
Gently deflate the dough and divide it into two equal parts. Shape each part into a rough rectangle and place on a parchment-lined baking sheet. Cover with a damp cloth and let rise for another 1 1/2 hours.
Preheat the oven to 425°F. Bake the loaves for 25 minutes, or until golden brown and hollow-sounding when tapped. Transfer to a wire rack to cool.