How to Season Cast Iron

When to season
  • Over time, and with infrequent use or improper care, your cast-iron cookware may develop some rust or lose its natural nonstick finish.
  • If you notice any rust, or if the black iron looks dull or fades, then it’s time to season your skillet.
How to season
  • Apply a very thin layer of high-heat cooking oil like grapeseed or canola.
  • Rub the oil all over the skillet, inside and outside.
  • Then place it upside down in the oven on a rack with a foil–lined baking sheet below to reduce mess.
  • Heat the oven to 500°F and keep the pan in the oven for 1 hour.
  • Then turn off the heat and let the pan cool.

Source: Should You Clean Your Cast-Iron Skillet with Soap? Lodge Settles the Debate | EatingWell