There’s some very interesting chemistry going on between a copper pan and its tin lining.

I thought I’d start with the chemistry of copper tarnish.

Now we’ll look at how to remove it.

If you see an odd zig-zag pattern on the surface of one of your pans, take a good look — you’re getting a glimpse into your tin’s molecular structure.

Scientific research affirms that the tin lining of a copper pot is non-toxic.

Once again, folks, please don’t try this at home.

I turned this pot purple.

To my eye, a silver lining looks a lot like tin, and I thought it might be useful to be able to tell the difference.