STIFF-TEXTURED LEVAIN: Prepare the levain and ripen for 12 to 14 hours at 70°F.
MIXING: Add all the ingredients to the mixing bowl. In a spiral mixer, mix for 4 minutes on first speed and about 1 minute on second. When the dough is tugged, you should be able to feel a bit of gluten strength from the 35 percent white flour, but the overall dough st