While sausage can be made from almost any kind of meat, it is most commonly made from pig meat. Beef sausage is also common, as are sausages made of a blend of pork and beef. For consumers who avoid red meat, poultry sausages are increasingly common.
Sausage is usually made from ground meat mixed with fat, salt and other seasonings, and sometimes fillers such as bread crumbs. It is often stuffed into casings to form sausage links, but raw sausage can also be bought in bulk. Sausages can be sold cooked, smoked, dried, cured or raw. While casings were traditionally made from the cleaned intestines of an animal, modern casings are more often made from collagen or cellulose.