Butter two 9x5x3 inch loaf pans.

Mix yeast and molasses. Add the warm water to the yeast-molasses mixture and whisk to combine.

Preheat oven to 450°F.

In a large (4-quart) bowl, mix together the flour and salt.

Now, wait until the yeast mixture becomes foamy, about 10 minutes.

Make a well in the center of the flour and pour in the yeast mixture.

Working with your hands, mix the flour and yeast mixture together until you have a sticky batter.

Divide the dough between the two prepared loaf pans, and let sit uncovered until the dough rises to the top of the pans, about 20 minutes.

Place the loaves in the oven and bake for 20 minutes.

Reduce the oven temperature to 350°F, rotate the pans to ensure even baking, and bake another 20 minutes.

Remove the loaves from the pans, then place them back in the oven upside-down, directly on the rack, and bake an additional 25 minutes.

Remove the loaves from the oven and let cool before slicing.