It is prepared by filling the natural casing with rind, pork meat (usually of secondary preference), and fat mixed with salt and spices; in industrial production, nitrites and nitrates are added as preservatives.
Cured meats are made by filling natural casings with a mixture of rind, pork meat, and fat, seasoned with salt and spices. In mass production, nitrites and nitrates are typically added to act as preservatives.