Have washed and scraped clean the nape or head and shoulders of the fish; cut it up small and lay it in a stew-pan with the water and onions, fried in oil a light brown; put them on top of the fish with cayenne pepper, and ground ginger, with the salt; let it all stew gently until it is done; if there should be too much gravy on it before adding the sauce, take some off. Prepare eggs and lemons; then take some of the gravy from the fish while it is boiling, add it to the lemon, with the eggs well beaten, and potato flour; mix smoothly with some chopped parsley; when all is well mixed, add it to the fish, shake it gently for five minutes while it is boiling, taking care not to let it burn; when it is sufficiently cooked let it stand for an hour and serve it. Garnish with slices of lemon and parsley. To be eaten cold.
The International Jewish Cook Book (1919).