Chicken fat
Chicken fat is fat obtained (usually as a by-product) from chicken rendering and processing. Of the many animal-sourced substances, chicken fat is noted for being high in linoleic acid, an omega-6 fatty acid. Linoleic acid levels are between 17.9% and 22.8%. It is a common flavoring, additive or main component of chicken soup. It is often used in pet foods, and has been used in the production of biodiesel. One method of converting chicken fat into biodiesel is through a process called supercritical methanol treatment.