A boiling kettle is a kitchen appliance used to heat water quickly. It typically consists of a container, a heating element, and a lid. When the kettle is plugged in and turned on, the heating element warms the water until it reaches its boiling point, which is 100 degrees Celsius (212 degrees Fahrenheit) at sea level. Most boiling kettles are made from materials like stainless steel, glass, or plastic. They often feature an automatic shut-off function that activates when the water boils, ensuring safety and energy efficiency. Some models also include temperature settings for different types of tea or coffee, enhancing the brewing experience.