Abstract: An improvement in the composition of an animal feed product prepared from brewery slurry, spent brewer's grain and a liquid GRAS-approved polymer is described. A process for making the animal feed product, wherein the process combines the brewery slurry and spent brewer's grain, and then injects the GRAS-approved polymer into the mixture as the mixture is pumped into a screw press, and then the finished product is collected from the screw press is described.