Post #539418 by DemeraraDrinker on Mon, Jun 28, 2010 7:42 AM

Thanks for all your ideas. I have tried degreaser and paint thinner to no avail.

The inside of the mug is glazed, and the thinner did not take anything off. There is some gunk on the outside, too, but for now I am concentrating on the inside so I can drink something out of the mug (getting thirsty).

I will try Bar-Keepers friend (I've kind of been wanting to get that stuff anyway) and Goo-Gone.

Here is what the gunk looks like:

I think whatever it is might respond well to some abrasive cleaning. I'm thinking the Bar-Keepers friend has a shot here.