@tsaukpaetra dog took a shit in your nice kitchen pan?
It looked exactly like a magnetic parts tray until I embiggened it, thought it was metallic swarf from a sump or something.
@tsaukpaetra Try heating up a bit of white vinegar in the pan. Should help loosen that.
Vinager is amazing for cleaning everything, and descaling kettles.
The other neat trick someone showed me is to boil a dishwasher tablet or two in the pan, that even removed burnt sugar.