To let their defenseman (or whoever is icing the puck) know that the icing call hasn't been waved off by the referee.
I believe they call it Frosting.
When the puck is fired the length of the ice, or is "dumped" into the opponents zone, the referee must call icing if the puck has passed two red lines and goes untouched.
Icing
The team committing the icing infraction cannot change lines until the after the following face-off takes place, where as the non-offending team is permitted a line change.
Icing cake :/
If you are making icing, yes. If you are making a meringue, no.
basicly what dirty icing is, is when you ice the cake with a thick icing and dont rub it to even it out
Fondant goes over icing that has been on a cake in the fridge.
To make a glaze icing shine, mix icing sugar with water. As the water evaporates, the icing sugar remains in in solid form and glazes.
It is called icing on the cake
icing sugar about a teaspoon of butter and boiling water - different amounts of sugar and water for different consistencies (thickness's) and amount of icing of course and add some cocoa for chocolate icing and an essence for flavoured icing although i find icing to be sweet enough!