Kielbasa, Potato and Cabbage Soup

2 tablespoons olive or vegetable oil 1 1/4 pounds (1 ring) kielbasa, 1-inch dice 1 pound (1 large or 2 medium) starchy potato, such as russet, peeled and chopped 1 tablespoon paprika, 1 scant palmful 1/2 tablespoon coriander, half a palmful 1/2 teaspoon ground allspice 2 carrots, chopped 2 ribs celery, chopped 2 cloves garlic, crushed 1 onion, chopped Salt and freshly ground black pepper 1/2 head savoy cabbage, chopped A few grates nutmeg 1 cup lager beer, room temp 4 cups chicken stock 2 cups tomato passata or puree 1/2 cup creme fraiche 3 tablespoons chopped fresh dill or 1 1/2 teaspoons dried Handful fresh parsley leaves, chopped 1/2 lemon, juiced