In a large bowl, dissolve the molasses in the warm water. Sprinkle the yeast over the liquid and let stand until foamy, about 10 minutes
Stir the salt into the yeast mixture. Then stir in the flour until the dough starts to come together. Turn the dough out onto a work surface that has been sprinkled lightly with flour. Knead the dough until it becomes smooth and elastic, about 5 minutes. Place the dough in a large bowl that has been sprayed with olive oil spray; cover it loosely with a clean kitchen towel. Let the dough sit in a warm place until it has doubled in size, about 1 hour.