Quote Originally Posted by Tuckervill View Post
You coat it with oil all over, front and back and handle and put it in the oven at about 250* for an hour or so. Put something on the rack below it to catch the drippings. Wipe it off, and, if you really want to do it up good, repeat the process.
This works good - just make sure you put it upside down in the oven, or you end up with a sticky varnish like coating... I did that once. Took some time to get the pan back to it's normal self.

The other thing that helps is cooking lots of naturally fatty foods in it.