The distillers syrup will contain some protein and limited energy. I'm told it has a bitter taste. Smells great though. Corn oil on the other hand has no protein but extremely high energy content and is expensive. I'd guess around $.75 per lb. There are some companies that pick up grease from restaurants etc, clean it, remove most of the odor and sell it much cheaper. No idea what they get for it but has to be cheaper than corn oil or soybean oil.