Are there any advantages/disadvantages for different methods for cleaning limescale (from a kettle/thermos)?
The methods I know about:
- Citric acid (lemon/lime salt?)
I usually prefer the former, since it's easier to wash it without getting a taste or a need to re-wash it.
The advantages/disadvantages I'm looking for are regards those or other methods, in the terms of safety, easy to use, not hurting the kettle etc.