I put a pot on with water to boil for something and forgot about. The water dried up in the pot and caused staining on the inside and the outside of the pot. The inside had gray stains on the bottom and the partway up the sides. The outside has purplish/copperish stains swirling up the sides. It's still shiny but you can see the stains.
Does anyone know how to get them off? I tried the All-Clad customer service and they told me to use Barkeepers's Friend. I haven't tried that yet, but I'm doubtful it will help as there isn't anything stuck to the outside of the pot. I'm wondering if the high heat changed the metal. I have a Viking range.
Can anyone help?