Hello, I have just gotten used to using cast iron skillets. I have two vintage Griswold Dutch ovens that appear to have a black enameled coated interior. Do I treat and use these the same as my skillets? Do I season them and do I cook in them as if they were bare cast iron is my meaning. And can I expect the same non stick results I have become accustomed to? Maybe it's a silly question, but it's best asked than wondered about.