Crystal Clear Ice Starts With More Than Boiling Water
Boiling Water And Cloudy Ice: Many people believe boiling water is the key to making crystal-clear ice cubes. While boiling water can help reduce some cloudiness, it is only part of the process. The real reason ice becomes cloudy has more to do with trapped gases, minerals, and the way water freezes. Tap water contains dissolved gases like oxygen and nitrogen. It also contains tiny minerals and impurities. As water freezes, these particles get pushed toward the center of the ice cube. Once trapped inside, they create the white cloudy look most people see in freezer ice. Boiling water removes some dissolved gases, which can slightly improve the appearance of ice. However, even boiled water usually freezes from all directions at once in a normal freezer tray. This traps air and impurities inside the cube, leaving it less than perfectly clear.