If you happen to spot stains resembling water spots or rust at the bottom of your kettle, don't fret! It's likely a harmless buildup of minerals known as limescale. This common occurrence, mainly composed of calcium carbonate, often appears as light-colored stains, typically white or off-white.
Limescale is a natural byproduct of heating water and is inevitable in all kettles. The rate at which mineral deposits accumulate depends on the mineral concentration in your water source. Signs of scale buildup may include a sluggish temperature readout, over-boiling, inaccurate temperature settings, and reduced heating efficiency. If you observe any of these issues, limescale is probably the culprit.
The good news is you can easily address this by descaling your kettle, a process that involves using a gentle acid to remove deposits without harming the metal. You can opt for either vinegar or citric acid for descaling. Both are safe and effective, but citric acid, being a bit stronger, doesn't leave a lingering scent like vinegar might.
Descaling Instructions:
• If using vinegar, create a solution with equal parts vinegar and water. Boil the mixture, let it sit for at least half an hour, then empty and rinse the kettle thoroughly.
• If using citric acid, mix 500ml of water with 2 spoonfuls of citric acid. Follow the same boiling and sitting process as with vinegar, then empty and rinse thoroughly. Refer to the product instructions for more details.
Remember: Avoid scrubbing the bottom of your kettle with steel wool or an abrasive brush, as this can damage the inner surface and lead to more limescale or even rust. Instead, use a sponge or soft brush for gentle cleaning.