Pickled or salted herring fillets are doused in a sweet and sour sauce of cream, yogurt, pickling liquid, and fresh herbs along with apples, pickles, and onions in this German specialty called sahnehering. Typical varieties of herring fillets used in this specialty include bismarck herring, matjes herring, or Baltic herring, and the dish is often finished with freshly chopped chives on top before serving.