All of the castiron geeks say Flaxseed oil but from experience I can tell you it doesn't work great- eventually you get chipping in your seasoning. I ended up s

All of the castiron geeks say Flaxseed oil but from experience I can tell you it doesn't work great- eventually you get chipping in your seasoning. I ended up stripping my seasoning and redoing it using crisco which has given me the best results so far.