white grease

White grease is a type of lubricant derived from inedible hog fat, characterized by a low content of free fatty acids. It is considered lard unfit for human consumption and is utilized industrially.12

Greases, in general, are thick, oily lubricants. They can be made from rendered animal fats or from petroleum-derived or synthetic oils combined with a thickening agent. Other types of animal-fat-based greases include yellow grease (from darker hog parts), brown grease (containing beef and mutton fats), and fleshing grease (trimmed from hides). Greases of mineral or synthetic origin use thickening agents like soap or inorganic gels dispersed in a liquid lubricant, often with additives to enhance performance.1