Rendering a beached whale in California Rendering is a process that converts waste animal into stable, usable materials. Rendering can refer to any processing of into more useful materials, or, more narrowly, to the rendering of whole animal fatty tissue into purified fats like.
Rendering can be carried out on an industrial, farm, or kitchen. The majority of tissue processed comes from, but also includes restaurant grease and butcher shop trimmings and expired meat from grocery stores. This material can include the tissue, bones, and, as well as entire carcasses of animals condemned at slaughterhouses, and those that have died on farms, in transit, etc. The most common animal sources are,,,.
The rendering process simultaneously dries the material and separates the fat from the. A rendering process yields a fat (, choice white grease, bleachable fancy, etc.) and a protein meal (, poultry byproduct meal, etc.).
Rendering plants often also handle other materials, such as slaughterhouse, and, but do so using processes distinct from true rendering. The occupation of renderer has appeared in 'dirtiest jobs' lists.