1. Mix together the yeast and warm water. Add the molasses and sugar and let stand for 10 minutes, or until yeast dissolves and mixture starts to bubble.
2. Meanwhile, mix together the whole wheat flour, soy flour, dry milk, wheat germ, brewer's yeast, and salt.
3. Stir the yeast mixture and add half the flour mixture and the oil. Beat vigorously and add only as much additional flour mixture as can be beaten in easily.
4. Continue to beat the mixture until it is smooth and elastic, at least 10 minutes. With the spoon and the hands, work in the remaining flour mixture.
5. Turn into two well-oiled 8 1/2- by 4 1/4- by 2 1/2-inch loaf pans. Cover and let rise until mixture has doubled in bulk, about 45 minutes.
6. Preheat the oven to 375 degrees.
7. Bake for 50 minutes, or until the loaves sound hollow when tapped on the bottom. Cool on wire racks.