Sausage making is a logical outcome of efficient butchery. Traditionally, sausage makers would salt various tissues and organs such as scraps, organ meats, blood, and fat to help preserve them. They would then stuff them into tubular casings made from the cleaned intestines of the animal, producing the characteristic cylindrical shape. Hence, sausages, puddings, and salami are among the oldest of prepared foods, whether cooked and eaten immediately or dried to varying degrees.
Traditionally, sausage casings were made of the cleaned intestines, or stomachs in the case of haggis and other traditional puddings. Today, however, natural casings are often replaced by collagen, cellulose, or even plastic casings, especially in the case of industriallymanufactured sausages. Some forms of sausage, such as sliced sausage, are prepared without a casing. Additionally, luncheon meat and sausage meat are now available without casings in tin cans and jars.
Ingredients
The most basic sausage consists of meat, cut into pieces or ground, and filled into a casing. The meat may be from any animal, but traditionally is pork, beef, or veal. The meat to fat ratio is dependent upon the style and producer, but in the United States, fat content is legally limited to a maximum of 30%, 35% or 50%, by weight, depending on the style. The United States Department of Agriculture defines the content for various sausages and generally prohibits fillers and extenders.[3] Most traditional styles of sausage from Europe and Asia use no bread-based filler and are 100% meat and fat excluding flavorings.[4] In the UK and other countries with English cuisine traditions, bread and starch-based fillers account for up to 25% of ingredients. The filler used in many sausages helps them to keep their shape as they are cooked. As the meat contracts in the heat, the filler expands and absorbs the moisture lost from the meat.
Sausages classification is subject to regional differences of opinion. Various metrics such as types of ingredients, consistency, and preparation are used. In the English-speaking world, the following distinction between fresh, cooked, and dry sausages seems to be more or less accepted:
Cooked sausages are made with fresh meats, and then fully cooked. They are either eaten immediately after cooking or must be refrigerated. Examples include hot dogs, Braunschweiger, and liver sausage.
Cooked smoked sausages are cooked and then smoked or smoke-cooked. They are eaten hot or cold, but need to be refrigerated. Examples include kielbasa and mortadella. Some are slow cooked while smoking, in which case the process takes several days or longer, such as the case for Gyulai kolbász.
Fresh smoked sausages are fresh sausages that are smoked and cured. They do not normally require refrigeration and do not require any further cooking before eating. Examples include Mettwurst and Teewurst which are meat preparations packed in sausage casing but squeezed out of it (just like any other spread from a tube).
Dry sausages are cured sausages that are fermented and dried. Some are smoked as well at the beginning of the drying process. They are generally eaten cold and will keep for a long time. Examples include salami, Droë wors, Finnish meetvursti, Sucuk, Landjäger (smoked), Slim Jim, and summer sausage.
Bulk sausage, or sometimes sausage meat, refers to raw, ground, spiced meat, usually sold without any casing.
Vegetarian sausage refers to sausages made without meat, for example, with soya protein or with tofu or with herbs and spices. Vegetarian sausages are frequently sold in supermarkets, they might not be vegan, for they may contain ingredients such as eggs.
Other countries, however, use different systems of classification. Germany, for instance, which boasts more than 1200 types of sausage, distinguishes raw, cooked and precooked sausages.
Raw sausages are made with raw meat and are not cooked. They are preserved by lactic acid fermentation, and they may be dried, brined or smoked. Most raw sausages will keep for a long time. Examples include Mettwurst and salami.
Cooked sausages may include water and emulsifiers and are always cooked. They will not keep long. Examples include cervelat, Jagdwurst, and Weißwurst.
Precooked sausages (Kochwurst) are made with cooked meat but may also include raw organ meat. They may be heated after casing, and they will keep only for a few days. Examples include Saumagen and Blutwurst.
Salami (in Italy, salami is the plural of salame, a big, cured, fermented and air-dried sausage)
Cheese sausage (casalsiccia) with cheese inside
The United States has a particular type called pickled sausages, commonly found in gas stations and small roadside delicatessens. These are usually smoked or boiled sausages of a highly processed hot dog or kielbasa style plunged into a boiling brine of vinegar, salt, spices, and often a pink coloring, then canned in Mason jars. They are available in single blister packs or sold out of a jar. They are shelf stable, and they are a frequently offered alternative to beef jerky, Slim Jims, and other kippered snacks.
Certain countries classify sausage types according to the region in which the sausage was traditionally produced: