Mayonnaise. ( Fish. )
Take a pound or so of cold boiled fish (halibut, rock, or cod), cut—not chop—into pieces an inch in length. Mix in a bowl a dressing as follows: the yolks of four boiled eggs rubbed to a smooth paste with salad oil; add to these salt, pepper, mustard, two teaspoonfuls white sugar, and, lastly, six tablespoonfuls of vinegar. Beat the mixture until light, and just before pouring it over the fish, stir in lightly the frothed white of a raw egg. Serve the fish in a glass dish, with half the dressing stirred in with it. Spread the remainder over the top, and lay blanched lettuce-leaves around the edges, to be eaten with it.