Wikipedia
Schweinshaxe , in German cuisine, is a roasted ham hock (or “pork knuckle”). The ham hock is the end of the pig's leg, just above the ankle and below the meaty ham portion. It is especially popular in Bavaria as Schweinshaxn [ˈʃvaɪns.haksn̩] or Sauhax(n) [ˈsaohaks(n̩)].
Schweinshaxe is one of the formerly typical "Armeleuteessen" (poor man's food), in which recipes were composed which made inexpensive cuts of meat delicious (see, for beef, the popular Sauerbraten). Such inexpensive cuts usually require long periods of preparation. The meat is usually marinated for days, in the case of big cuts up to a week. The Schweinshaxe is then roasted at low temperatures, typically—depending on size—for two to three hours.
The most popular side dishes are potatoes and cabbage variations.
The Austrian version of this dish is called Stelze [ˈʃtɛl.tsə] or in dialect Stötzn/Stelzn ['ʃtœˑ.tsṇ]. It is usually marinated or pre-boiled in a caraway seed and garlic brine, roasted until the skin is crisp, and served with mustard, horseradish, and pickled chili peppers. The Bavarian version is classically served with potato dumplings and red cabbage, or with sauerkraut and potatoes.