If you've never given the type of kettle you own a second thought, then I don't blame you. Even after some time as Ideal Home's Kitchen Appliances Editor, I wouldn't argue that a kettle is the most exciting kitchen appliance, but it might be the most useful.
That's why thinking more about your kettle and whether it serves you as well as it could might be a worthwhile activity. Especially if you're wondering if a variable temperature kettle is worth it on your quest to upgrade your appliances.
