Grains including wheat, rye, barley malt, oats, corn and triticale (a hybrid of wheat and rye), are ground to the consistency of coarse flour, then mixed with water, cooked, mashed and fermented. After fermentation, the strip run (first round of distillation) separates out the alcohol from the fermented mash. The remaining grain/water mixture called "stillage" consists of water containing 5 to 10 percent grain solids.