Lecithin

Lecithin is a mixture of fatty substances found in tissue and is one of the building blocks of cell membranes in both humans and animals.

It is commonly used as a natural additive in commercial pet foods to help extend the shelf-life. And while it is often used as a dietary supplement, lecithin can also be found naturally in a wide range of ingredients such as egg yolks, soybeans, organic meat, and cabbage.