In a large bowl mix ... cups of white flour for 1 minute, to blend, ... the whole wheat, rye, cornmeal, and bran together ... 15 minutes. The bread needs a lot of kneading. ... It will keep indefinitely.
With 8 to 10 liters ... water and the rye flour stir a smooth dough in ... "Shoot in" the bread with the "baking holder" after ... and like other sourdough.