I have an older wagnerware ( one big w for both words ) colonial tea kettle . It has two jobs and does them well. It sits on top of the wood stove at camp to add some humidity to the air when the stove is running, as well as providing hot water for washing dishes often for weeks or months each year.
A few decades of doing that has left a bunch of crud stuck to the inside of the kettle . That is typical with any type kettle we use , cast iron, thin aluminum , enameled steel etc.
Anyways back to the point of my post , what is the safest ( for the kettle from the '20's ? ) to remove some or most of that hard mineral stuff from the inside ?
I know that if I heat it (just to dry out the nooks and crannies of the build up ) it will pop some of that stuff loose , but I don't want to push my luck and hurt it.
