Euro-East seljanka it is a ready-to-use ingredient for tasty soups.Seljanka is a traditional Slavic soup made from white cabbage, salted shiitake mushrooms, and pickles, flavored with tomato paste.Euro-East seljanka soup can be prepared quickly, and besides saving time, you get a soup that tastes homemade. Serve the warm soup with bread, sour cream, or crème fraiche. Try Euro-East seljanka as a side dish or make it into cabbage stew.