50 Percent Whole Sprouted 6 Grain Bran Soaker Super Sour Sourdough & Yeast Buns

Dough.Doc has done some moré experiments with bran as a soaker for the the liquid in the the levain to increase the sour in the final product. He now has a base for no bran soaker used and one for using sugar in place of 1-2% fructose.
Gravy Bran Soaker
His other additional tests point to the idea that using more bran to water ratio in the soak is better as is soaking longer before using and also making the bran soaker at near boiling temperature for the water.