Rendering (animal products)

renderingrenderedanimal rendering plantrenderanimal renderinggreavesrendered fatrendering plantboil yardsboiling down
Rendering is a process that converts waste animal tissue into stable, usable materials.wikipedia
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Animal product

animal productsanimal by-productsslaughterhouse waste
Rendering can refer to any processing of animal products into more useful materials, or, more narrowly, to the rendering of whole animal fatty tissue into purified fats like lard or tallow.
These products may go through a process known as "rendering" to be made into human and non-human foodstuffs, fats, and other material that can be sold to make commercial products such as cosmetics, paint, cleaners, polishes, glue, soap and ink.

Lard

pork fatpig fatanimal
Rendering can refer to any processing of animal products into more useful materials, or, more narrowly, to the rendering of whole animal fatty tissue into purified fats like lard or tallow. In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
Lard is fat from a pig, in both its rendered and unrendered forms.

Offal

organ meatorgan meatsvariety meats
This material can include the fatty tissue, bones, and offal, 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 beef, pork, sheep, and poultry.
Offal not used directly for human or animal food is often processed in a rendering plant, producing material that is used for fertilizer or fuel; or in some cases, it may be added to commercially produced pet food.

Pork

pig meatpigpigs
This material can include the fatty tissue, bones, and offal, 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 beef, pork, sheep, and poultry. In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
The only "raw" meat the charcutiers were allowed to sell was unrendered lard.

Meat and bone meal

animal feedblood and bonebone meal
A rendering process yields a fat commodity (yellow grease, choice white grease, bleachable fancy tallow, etc.) and a protein meal (meat and bone meal, poultry byproduct meal, etc.).
Meat and bone meal (MBM) is a product of the rendering industry.

Tallow

beef tallowbeef fatgreaves
Rendering can refer to any processing of animal products into more useful materials, or, more narrowly, to the rendering of whole animal fatty tissue into purified fats like lard or tallow. A rendering process yields a fat commodity (yellow grease, choice white grease, bleachable fancy tallow, etc.) and a protein meal (meat and bone meal, poultry byproduct meal, etc.). In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
Tallow is a rendered form of beef or mutton fat, and is primarily made up of triglycerides.

Yellow grease

greaseused cooking oilVegetable oil
A rendering process yields a fat commodity (yellow grease, choice white grease, bleachable fancy tallow, etc.) and a protein meal (meat and bone meal, poultry byproduct meal, etc.).
Yellow grease can also refer to lower-quality grades of tallow (cow or sheep fat) from animal rendering plants.

Clarified butter

butter oilclarifiedAnhydrous milk fat
In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
Clarified butter is milk fat rendered from butter to separate the milk solids and water from the butterfat.

Schmaltz

goose fatchicken fatgoose grease
In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
Schmaltz (also spelled schmalz or shmalz) is rendered (clarified) chicken or goose fat used for frying or as a spread on bread in Central European cuisine, and in the United States, particularly identified with Ashkenazi Jewish cuisine.

Butter

Bennecultured buttermelted butter
In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
Rendering butter, removing the water and milk solids, produces clarified butter or ghee, which is almost entirely butterfat.

The Jungle

book of the same nameThe Jungle, Upton Sinclair
Upton Sinclair wrote The Jungle (1906), an exposé on the Chicago meat processing industry which created public outrage.
Sinclair's account of workers falling into rendering tanks and being ground along with animal parts into "Durham's Pure Leaf Lard" gripped the public.

Suet

beef suetsuet dumpling
In the kitchen, rendering is used to transform butter into clarified butter, suet into tallow, pork fat into lard, and chicken fat into schmaltz.
Suet is made into tallow in a process called rendering, which involves melting and extended simmering, followed by straining, cooling and usually by repeating the entire process.

Flensing

flensedflenseflenser
Flensing
What whaling still continues in the 21st century is largely aboriginal, and the blubber is rarely rendered into oil, although it may be eaten as muktuk.

Animal slaughter

slaughterslaughteredslaughtering
Animal slaughter
Meat from animals which are dead, diseased, disabled or dying (4-D meat) on the arrival at the slaughterhouse is often salvaged for rendering, and used by a wide range of industries including pet food manufacturers, zoos, greyhound kennels, and mink ranches.

Animal euthanasia

euthanizedeuthanisedput down
Animal euthanasia
In some instances, animals euthanized at shelters or animal control agencies have been sent to meat rendering facilities to be processed for use in cosmetics, fertilizer, gelatin, poultry feed, pharmaceuticals and pet food.

Whale oil

oiltrain oilsperm oil
Whale oil
Rendering (animals)

Tissue (biology)

tissuetissuesbiological tissue
Rendering is a process that converts waste animal tissue into stable, usable materials.

Scalability

scalablescalescale-out
Rendering can be carried out on an industrial, farm, or kitchen scale.

Slaughterhouse

abattoirabbatoirslaughterhouses
The majority of tissue processed comes from slaughterhouses, but also includes restaurant grease and butcher shop trimmings and expired meat from grocery stores.

Fat

greasetotal fatdietary fat
This material can include the fatty tissue, bones, and offal, 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 beef, pork, sheep, and poultry.

Beef

meatcattleFrozen Beef
This material can include the fatty tissue, bones, and offal, 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 beef, pork, sheep, and poultry.

Sheep

ramlambdomestic sheep
This material can include the fatty tissue, bones, and offal, 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 beef, pork, sheep, and poultry.

Poultry

drumstickdomestic fowlpoultry meat
This material can include the fatty tissue, bones, and offal, 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 beef, pork, sheep, and poultry.

Bone

bone tissuecancellous bonecortical bone
The rendering process simultaneously dries the material and separates the fat from the bone and protein.

Protein

proteinsprotein synthesisproteinaceous
The rendering process simultaneously dries the material and separates the fat from the bone and protein.