Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
                        -----sour-cream sauce-----
   1      cup           sour cream
                        lemon -- juice only
     1/2  cup           yogurt
     1/4  teaspoon      sugar
                        -----salad-----
   2                    onions -- small
   2      teaspoons     dill -- fresh or
   2                    apples; medium -- tart
     1/2  teaspoon      dillweed -- dried
   8                    herring fillets -- marinated

Preparation:

Sauce: Blend thoroughly sour cream, yogurt, lemon juice and sugar. Salad: Peel onions and cut into thin slices. Peel and quarter apples, remove cores and but into thin wedges. Blend onions and apples with sauce. In a dish arrange herring and apple-onion mixture in layers. Cover tightly and marinate in refrigerator for 5 hours. Sprinkle with dill before serving.