Most of our nonstick pans have a slightly greasy residue in the bottom, even after they’ve been cleaned with hot water and detergent. It’s not enough oil to rub off on anything, but if you swirl your finger around the bottom of the pan, you can see the pattern, so it’s not just the feel of the nonstick surface.
Is this a common problem? Is there any way to get rid of these last traces of oil or grease or whatever it is?