invention uses that fiber as a carbohydrate that is metabolized by the fermentation step during the initial stages of fermentation the added yeast goes through a growth phase where the carbohydrates and available nitrogen are used to produce more yeast cells the yeast are high in protein content and also produce essential amino acids the reduction of fiber and increase of protein content produces a feed that is more digestable for monogastrics and therefore much higher in value a conventional corn to ethanol process produces the following from one bushel of corn in contrast an embodiment of the process 200 of the present invention produces the following from one bushel of corn moreover the process 200 improves the nutrient content of the final ddgs byproduct as follows embodiments of the invention may also be used to ferment whole stillage to other products the sugars produced through the process 200 are relatively low in concentration as compared to traditional starch fermentations this low concentration of fermentable sugars translates into low final concentrations of products this allows fermentations with products that are toxic to the fermentation organism to be carried with low residual sugars one example of such a fermentation would be acetone butanol ethanol abe fermentation in this fermentation butanol is toxic to the host organism at concentrations around 2 if whole stillage is not concentrated prior to the fermentation sugar concentrations of 3 to 4 wt are expected this would translate to final butanol concentrations of less than 2 while abe.