1. Fill up your kettle halfway and let it boil.
2. Add 2 tablespoons of citric acid.
3. Scrub the inside with a dish brush or old toothbrush.
4. Let the mixture sit for about 20 min
5. Scrub one more time
6. Pour the water out, rinse it a few times.
7. Fill the kettle up with just water all the way and let it boil.
8. Pour water out Your kettle is all clean and ready to use 😉