So I just recently discovered the wonder of Barkeeper's Friend - at least for use on really thick, tough stainless steel equipment like my brewing pot.
Does anyone use Barkeeper's Friend on the insides of your Corny kegs? I ask because it seems pretty abrasive and they appear to be sealed somehow or at least really highly polished in there, and I am afraid to rough that up.
Problem is that I have some questionable scaling inside one of mine; could be beer stone, I'm not sure.
Thanks for any advice!