I recently got a cast iron skillet to cook with. I'm concerned that the non-stick coatings on pans can be toxic and i'd rather not take the chance, as i'm trying to be as healthy as possible. From what I've read about cast iron, you need to "season" it, or use oil with cooking for quite awhile to create a coating that will prevent food from sticking. I don't actually use a lot of oil when cooking because of the high fat content...so I'm wondering if anyone knows what the healthiest oil to use would be? Thanks so much!!