Ukrainian Potato Soup

While in some towns and villages in western Ukraine this soup is called “white borshch,” it is more of a potato soup with a little shredded cabbage in it. I grew up eating this soup. Since we lived on a farm and had access to fresh milk on a daily basis, my family—perhaps completely out of traditional context—finished this soup off with buttermilk. Thick and creamy, the buttermilk and sour cream add just the right amount of tartness and improve the flavor still further. I always serve this