A little less than a year ago we bought a set of Mauviel copper pots. I was cleaning the pot today and noticed three tiny pits in the stainless steel. I'm sick! I don't know how they got there - we never use metal utensils and we clean them with soap, water and a little Bar Keeper's Friend. We dry them immediately after washing. We never throw in salt until the end of cooking sauces.
Any one know why it's pitting? I've tried scrubbing them out, but they won't budge, and one looks pretty deep.