To make a long story short... I found a cast Iron pan in the garage that was used to fry chicken in about five months ago. The oil, about two inches, turned into a cross between soft rubber, Jell-O and, pine tar. This new substance will not come off even with boiling hot water. I got some of it on my hand and the only thing that would take it off was Lava soap. This pan is over 100 years old and, I would like to save it. Have any of you home cooks ever seen anything like this happen? If so, how can I clean it?