Preparing food with the kettle
Kettles are designed to boil water and are not suitable for cooking tasks such as boiling eggs, making soup, or heating milk. Using the kettle for other purposes may result in the accumulation of residue and contaminants inside the kettle, which will shorten the lifespan of the product and may result in the food being cooked undercooked.

Using a kettle with blockages
If the kettle is clogged, it can no longer absorb heat from the heating element, resulting in longer boiling times. Furthermore, excessive clogging can damage the heat sensor, causing the kettle to shut off before the water reaches boiling point.