Home Appliances Design Twist Stovetop Kettle by Hakan Gürsu Twist is a sustainable water kettle with zero water loss. It preserves water by inner circulation, therefore provides water, energy and time efficiency. With water kettles, water efficiency is a problem where %25 of the water is lost during boiling. Unlike conventional kettles, Twist does not waste water, while it also saves energy by reducing process time. Besides being eco-friendly, it also makes water-heating process more economic, safe and practical. With its innovative water cycle system, water and steam are preserved in body and circulated.