Celery sauce
Boil half a cupful of minced celery in a cupful of hot water for fifteen minutes. Strain through a cloth, pressing hard. Return the liquor to the fire and boil up. Then cook with it a roux made of two tablespoonfuls of butter and the same of flour. Have ready the yolk of an egg, beaten light. Pour the hot sauce upon it, stir less than one minute over the fire, season with salt and paprika and pour out.
A nice accompaniment to boiled fowl and to boiled mutton.