The sour rye soup is a soup made of souredryeflour and meat (usually boiled pork sausage or pieces of smoked sausage, bacon or ham), which is specific to Poland (where it is known as żur or żurek) and other northern Slavic nations such as Slovakia and the Czech Republic (kyselo). Also, a variation of this soup is found in Lithuania.
Poland
In Poland it is sometimes served in an edible bowl made of bread or with boiled potatoes. The recipe varies from region to region. In Silesia, the żur śląski, different from the more traditional żurek, can be found.