How To make Heringstopf Mit Saurer Sahne (Herring Salad with Sour Cream)

------------------------------SOUR-CREAM SAUCE

1 c Sour Cream
1/2 c Yogurt
1/2 x Lemon; Juice Only
1/4 ts Sugar
:

SALAD----------------------------------- 2 ea Onions; Small
2 ea Apples; Medium, Tart
8 ea Herring Fillets; Marinated
2 ts Dill; Fresh OR
1/2 ts Dillweed; Dried
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.