Directions:
Cut up a celery root, one onion, and a sprig of parsley, tie the fish in a napkin and lay it on this bed of roots; pour in enough water to cover and add a dash of vinegar--the vinegar keeps the fish firm--then boil over a quick fire and add more salt to the water in which the fish has been boiled. Lay your fish on a hot platter and prepare the following sauce: set a cup of sweet cream in a kettle, heat it, add a tablespoon of fresh butter, salt and pepper, and thicken with a tablespoon of flour which has been wet with a little cold milk, stir this paste into the cream and boil about one minute, stirring constantly; pour over the fish. Boil two eggs, and while they are boiling, blanch about a dozen or more almonds and stick them into the fish, points up; cover the eggs with cold water, peel them, separate the whites from the yolks, chop each separately; garnish the fish, first with a row of chopped yolks, then whites, until all is used: lay chopped parsley all around the platter.
Fresh cod and striped bass may be cooked in this way.