This bread is one of my favorite things to bake at Christmas. It's a lot of work, but so worth it. The only thing I do differently is I make the pumpernickel dough first, then the wheat and finally the white. The reason for that is the first two are more dense, so it takes longer for them to rise. By the time I finish kneading the white bread dough the other have have enough head start for all three doughs to finish rising at the same time.