I was boiling water, became distracted, and it boiled dry and turned black. I've found good tips for getting rid of the black (baking soda and vinegar), and it is already looking a lot better, but still not like it was before this incident. So, I'm wondering - is this pan ruined or just ugly now? (I won't cry either way b/c I hate the handle on it and I would welcome an opportunity to replace this pan with something I'd enjoy more.) Just want to clarify what impact this damage will have on performance and taste.