Vienna Icing
Take half a pound of fresh butter, three-quarters of a pound of Marshall's Icing Sugar, flavour with a wineglassful of any liqueur and work it till like a cream with a wooden spoon; if coloured icing is required divide it into two parts and colour one with a few drops of Marshall's Carmine or Sap Green and leave the other part plain; put both colours into a forcing bag by a fancy pipe, and use.