Prepare a Cream Sauce, seasoning with grated onion, minced parsley, and powdered mace. Take from the fire, add the yolks of two eggs, and salt and pepper to taste. Put a layer of cold, cooked, flaked and seasoned fish, into a buttered baking dish, spread with the sauce, and repeat until the dish is full, having sauce on top. Sprinkle with crumbs, dot with butter, and brown in the oven. This may be baked in individual dishes if desired.
The Myrtle Reed Cook Book, 1916