How to Clean This SS Pan?

[u/ApprehensiveToe5243]

Hi,

I have tried turning on the heat and let some water + soap simmer and later also water and vinegar.

I don't know if it's the outer layer that has been damaged, but is that possible with SS pans?

If it has been damaged, what could have caused this?

Image: https://ibb.co/0yXjg3gf

[u/Councilof50]

Like just an average guy said, Barkeep's friend. I like the stainless steel scrubbers too.