Heats In A Kettle is a term used to describe the process of boiling water in a kettle. Boiling water in a kettle is a common kitchen task that is done by heating the water until it reaches its boiling point. This process is known as boiling and is done by heating the water until it reaches 100°C. Boiling water in a kettle is a simple and effective way to quickly heat up water for a variety of uses, such as making tea or coffee, cooking pasta, or sterilizing bottles.