How to Clean and Re-Season a Cast Iron Skillet
This method uses coarse salt and vegetable oil to clean and re-season cast iron skillets, removing rust and buildup while restoring a protective non-stick layer without damaging the cookware.
This method uses coarse salt and vegetable oil to clean and re-season cast iron skillets, removing rust and buildup while restoring a protective non-stick layer without damaging the cookware.
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Pour a generous amount of coarse kosher salt into the rusty or dirty cast iron skillet. The salt will act as an abrasive.
Using a metal scrubber, add a small amount of water to create a salt paste and scrub the entire surface of the pan, including the handle.
Rinse the pan thoroughly with water to remove all the salt and debris.
Place the wet pan on a stovetop over medium heat to dry it completely. This prevents rusting.
Once the pan is bone dry, turn off the heat and add the vegetable oil.
Use a paper towel to wipe the oil over the entire pan, inside and out, creating a thin, even coating.
Place the oiled pan back on the stovetop over medium heat for about 3 minutes to set the new layer of seasoning.
Store the cleaned and seasoned skillet in a dry place. If not using regularly, wipe with a thin layer of vegetable oil every few months to maintain seasoning.
No. Coarse salt's larger crystals provide the abrasive texture needed to scrub away rust and debris. Table salt dissolves too quickly and won't clean effectively.
Re-season when you notice rust spots, discoloration, or loss of non-stick properties—typically every few months depending on use and storage conditions.
No. Vegetable oil has a higher smoke point and polymerizes better during seasoning. Olive oil and butter will smoke at lower temperatures and won't create a durable coating.
For heavy rust, this method works best as a maintenance technique. Severely rusted skillets may benefit from a vinegar soak first, then salt scrubbing, followed by re-seasoning.
Yes. A warm skillet allows the oil to distribute evenly and begin polymerizing, creating a stronger non-stick surface than applying oil to a cold pan.
