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.
Meats that have been stuffed into natural casings using a combination of rind, secondary pork meat, and fat, mixed with seasonings like salt and spices, often include additives such as nitrites and nitrates for preservation purposes.