HOW TO – Grow ice-cube spikes in your freezer

Ever wonder why some of the ice cubes in your ice tray have little spikes? Here’s why and here’s how to make your own spikey ice cubes “With ideal conditions (distilled water, a fan promoting evaporation and rapid cooling, -7 degree C temperature, an empty freezer) about half the cubes in an ice-cube tray will form spikes” [via] Link.