PIPING. A kind of decoration made of icing, used for ornamenting cakes, pastry-stands, small pastry, &c.: it is thus effected:—Take a short funnel or conically-shaped instrument of tin, and insert the same within a larger-sized and similarly-shaped paper funnel or cornet; the point end of which must be cut off so as to allow the tin instrument to protrude: place the icing or glazing (a mixture of melted-potting sugar and white of egg, worked into a smooth and firm paste) in the cornet or forcer; the upper part of which must be completely closed; the glazing is then forced out at the point by pressure of the thumb on the upper part of the cornet.