Dry promptly and thoroughly with a lint-free cloth or paper towel; Rub with a very light layer of vegetable oil, preferably while the cookware is still warm … the pot looks quite clean, has no leftover food residue, but continues to blacken the drying towels used. This is NOT normal behaviour for cast iron cookware! … Using parchment paper …
https://www.amazon.com/Lodge-Pre-seasoned-Cooking-Basting-Baking/dp/B00008GKDU

