Natural crushed ice melts so very quickly that it?s almost impossible to photograph. But, a teaspoon of Grated Ice Effect left in a glass of water for about 15 minutes gives a life-like crushed ice effect that keeps its shape for days. The Grated Ice Effect can be renewed by adding a bit of water from time to time. Once expanded in water, it can be coloured with all sorts of liquids, including fruit juices, alcoholic beverages, tea, soda, etc Ideal for still-life pictures and video shooting.