I have a lovely cream-colored Dutch oven by Copco - possibly the only cookware item that I'm really happy to own. But I recently cooked something in it and can't get it clean. Or can't get it to look clean. It's completely smooth to the touch - no bits of leftover food on it. But it's got all kinds of brown stains, and I can't figure out why, nor how to remove them.
I'm assuming I shouldn't scrub with anything abrasive, right?