Gefilte Fish
A mix of white-fleshed fish (carp, pike, whitefish, or a more modern blend of cod and haddock) is ground with grated onion, eggs, matzo meal and a little sugar, then formed into quenelles. The quenelles poach gently in a broth made from the fish skin, heads and bones with onion and carrot. After an hour they are lifted out and chilled overnight in the strained broth; some of the broth jellies as it cools, which is the point. Served cold, on a leaf of lettuce, with a generous spoon of horseradish.