Dissolve yeast in 1 cup lukewarm water. Add flour, sugar and salt together in a large bowl, then stir in the dissolved yeast. Add just enough of the second cup of water to hold dough together. Mix until soft and rather sticky. Cover and set bowl in a warm spot. Let rise until double in size.
When dough is high and spongy, punch down. Divide into 2 parts and put each in greased loaf pan. Cover and let rise. Brush top with melted butter or beaten egg white. Bake 45 minutes at 400 degrees.