Proof yeast in mixture of water and sugar (make a starter). You should see krausen in less than an hour.
Put spent grain in large mixer bowl. Mix in starter, and start adding flour. Keep adding flour until the dough is smooth and no longer sticky. Place dough in a large bowl, cover with a clean towel, and let rise until doubled. Punch down dough, and either:.
A) Split into two loaves and place in greased bread pans.
B) Form into a round loaf and place on cookie sheet with a thin layer of corn meal under the loaf.
Allow loaf(ves) to double in size, bake in 375 F oven 30 to 40 minutes until browned and a long pin, such as a turkey pan, comes out clean after being inserted into the center of the loaf.