When I read "flaxseed oil is the only drying oil that’s edible", Tung Oil came to mind as a candidate for seasoning cast iron. It's easy to buy 100% tung oil t

When I read "flaxseed oil is the only drying oil that’s edible", Tung Oil came to mind as a candidate for seasoning cast iron. It's easy to buy 100% tung oil that's reasonably priced and FDA approved for food contact (see http://www.realmilkpaint.com/oil.html http://www.realmilkpaint.com/oil.html).