animal fat

Animal fat, also known as adipose tissue, is a substance of animal origin that is nonvolatile, insoluble in water, and oily to the touch. It is one of the three main classes of foodstuffs, alongside proteins and carbohydrates, and serves as a concentrated storehouse of energy.1

Fats are chemically composed of glycerides, which are esters formed from fatty acids and glycerol. They are typically solid at room temperature but liquefy at higher temperatures. Animal fats like tallow and lard are produced through rendering, a process involving cooking fatty tissues to release the fat.12

Fats play crucial roles in both plants and animals, including providing energy reserves and insulation against cold. In animals, subcutaneous fat layers help maintain body temperature, which is particularly important for species in cold climates. Fats also carry essential fatty acids and fat-soluble vitamins necessary for health.1

While fats are vital, excessive consumption, particularly of saturated fats, can contribute to health issues like elevated cholesterol and cardiovascular disease. Saturated fats, characterized by fully hydrogenated hydrocarbon molecules, are typically solid and stable. Foods high in saturated fat include butter, tallow, lard, and fatty meats.3