Saucisse de Strasbourg (Knack)

The saucisse de Strasbourg, commonly called knack after the crack of its skin under the tooth, is stuffed exclusively into sheep casing, finer and more fragile than hog casing. It is this casing that produces the characteristic snap at the first bite, the origin of its nickname. It's based on a professional specification, not a European PGI: it must contain at least 75 per cent pork and beef and be smoked over beech.

The saucisse de Strasbourg belongs to the Rhenish charcuterie tradition shared with the Frankfurter würstchen, to which it is technically close: the same fine-emulsion technique, the same beech-wood smoking, the same sheep casing. Alsace and the Palatinate long formed a single charcuterie space, travelled by the same itinerant journeymen. The region having been joined to Germany from 1871 to 1918, and again from 1940 to 1944, Alsatian charcuterie developed techniques of Germanic inspiration that endured after Alsace’s definitive return to France in 1945. But since 1918, the saucisse de Strasbourg has followed an administrative and commercial trajectory distinct from that of the Frankfurter, without the two products ceasing to be technically related.

It has no codified regional variants. In the absence of a PGI, its composition varies from maker to maker, within broad limits. The industrial versions, sold under names such as knack d’Alsace or Knacki, often depart from the original composition, replacing the natural casing with a synthetic one and altering the meat proportions.

Its consumption is closely tied to Alsatian choucroute garnie. In that dish, the sausage cooks in the choucroute during the last half-hour: the acidity of the fermented cabbage penetrates the sausage, while its fat enriches the cabbage. This exchange of flavours during slow cooking sets the saucisse de Strasbourg cooked in choucroute apart from one that is merely poached or grilled. It is also eaten reheated in hot water, served with strong mustard and bread.

Among French sausages, the saucisse de Strasbourg is, with the saucisse de Toulouse and the chipolata, one of the three best-selling fresh sausages in France. It is present in every national distribution channel.

The absence of a PGI leaves its name open to use without constraints on origin or composition, leading to a proliferation of industrial products bearing the same name, with characteristics far removed from the original Alsatian artisanal version. A PGI application was filed for the knack d’Alsace, but the dossier was withdrawn in 2015 without success. The situation is comparable to that of the Frankfurter facing the hot dog: a name passed into common vocabulary at the expense of the designation of origin.