I understand that Barkeeper's Friend is a commonly used product for cleaning bowls & lids. Are you all using the powdered version or the liquid?
It's been a while since I've done a restore, but I recall having excellent results with the powdered, and a bad experience with liquid Barkeeper's Friend. The liquid formula, IIRC, etched the exterior of a black, late production bowl & lid after sitting in the sun for a few minutes before rinsing.
Can anybody else speak to this? Has anybody had experiences, good or bad, with the liquid formula?