Sauerkraut apples and white wine are added in popular variations. Traditionally it is served warm, with pork (e.g. "eisbein", "schweinshaxe", "Kassler") or sausages (smoked or fried sausages, "Frankfurter Würstchen", Vienna sausages, black pudding), accompanied typically by roasted or steamed potatoes or dumplings ("knödel" or "schupfnudel"). Similar recipes are common in other Central European cuisines. The Czech national dish "vepřo knedlo zelo" consists of roast pork with "knedliky" and sauerkraut. In France, sauerkraut is the main ingredient of the Alsatian meal "choucroute garnie" (French for "dressed sauerkraut"), sauerkraut with sausages (Strasbourg sausages, smoked Morteau or Montbéliard sausages), charcuterie (bacon, ham, etc.), and
Frankfurter Würstchen in Germany since about 1860. Since 1929, the indication is only allowed to be used for sausages that are in fact produced in the Frankfurt area, mainly in Neu-Isenburg and Dreieich. Originally, Frankfurters were made without nitrite curing salt. After the special ageing and smoking methods, the sausages, now of a golden colour, are put into wooden boxes with small parchment paper between layers. Therefore, the traditional sausages are square in shape but there are a few exceptions where the sausage is circular. Outside Germany, "frankfurter" is a common designation for boiled sausages, such as North American hot dogs, which