One way to make feeds from waste alcohol is the use of single-cell protein (SCP). This is a substitute source of protein. When this isn’t directly related to alcohol the production of SCP can utilize the waste material. SCP does contain the essential ammino acids needed and it can be a valuable source of protein. SCP can be made from many byproducts during the feed creation process. Things like animal byproducts, fruit, and vegetable waste (things like peels).