Seeded Whole Grain Sourdough
This bread is almost 100% whole grain, except for a small amount of white starter. It uses whole wheat and rye flour, and a soaker of flax seeds, sesame seeds, bulgur, and oats.
The recipe, along with a bit about what happens when you overproof it, is here. (These loaves are not overproofed, but the first ones I made were.)