Cast iron works best when its well seasoned. That means obtaining a beautiful black finish. Cooking in it helps the most. A few pounds of bacon and your skillet should look great. That doesn’t work as well if you need a quicker seasoning.
Many people recommend coating the cast iron and placing it upside down over a cookie sheet in the oven. While this method does work, I was left with a smokey house.
So instead, I tried it on the grill.
I left the grill on high for about half an hour and allowed it to cool for several hours. The results were prefect.