Much Like A Fine Chocolatier Slowly Tempers Chocolate To A Solid State For The Best Quality And Flavor, Marvel Clear Ice Employs A Fractional Freezing Process To Create Clear Ice With The Ultimate Clarity And Purity. As Water Runs Over The Cold Plate, Pure Water Freezes First. Dissolved Solids Are Carried Away Into The Ater Reservior, Giving You Clear Ice That Cools Your Drinks Without Affecting The Flavor.