I have bought an old fashioned kettle off the car boot, It looks like it has been used as a tea pot and is full of the tannins etc inside. Does anyone have a tip for removal of the residue?
Bleach is fine, I've done it that way plenty of times and have survived so far. Just make sure you rinse it out well before using and if possible boil one full kettle and throw that away before using for drinking. Bleachy tasting tea isn't that nice