The Ultimate Guide to Cast Iron Skillet Care

By The Daily Culinary Team | Updated: June 2026

There is a lot of mythology surrounding cast iron skillets. Some people treat them like fragile artifacts that can be ruined by a single drop of soap, while others view them as indestructible slabs of iron. The truth lies somewhere in the middle.

A well-seasoned cast iron skillet is arguably the best non-stick pan in your kitchen. It can sear a perfect ribeye steak, bake a fluffy cornbread, and fry eggs without sticking. But to achieve that magical black, glossy surface, you need to know how to care for it properly.

What is "Seasoning"?

Seasoning is not flavor; it is a hard, slick layer of polymerized oil baked onto the iron. When oil is heated to its smoke point in the presence of iron and oxygen, it undergoes a chemical reaction that bonds it to the metal. This layer protects the iron from rust and provides a naturally non-stick surface.

How to Clean Your Cast Iron (The Right Way)

Forget the old wives' tale: you can use soap on cast iron. Modern dish soaps do not contain the harsh lye that ruined seasoning in the 19th century. A few drops of mild dish soap will not strip polymerized oil.

Wash it while it's warm: Rinse the pan with warm water. Use a sponge or a gentle brush and a little bit of mild soap to remove food debris.
Scrub stubborn bits: For stuck-on food, make a paste of coarse kosher salt and water, and scrub with a paper towel. Alternatively, use a plastic pan scraper.
Dry it completely: This is the most crucial step. Never let cast iron air dry. Wipe it thoroughly with a towel, then place it on the stove over medium-low heat for 3-5 minutes to evaporate any microscopic moisture.
Oil it lightly: While the pan is still warm, apply a very thin layer of neutral cooking oil (like canola or grapeseed) using a paper towel. Wipe out as much excess oil as possible until the pan looks dry but glossy.

Pro Tip: The Paper Towel Test When applying oil after cleaning, wipe the pan as if you made a mistake and are trying to remove all the oil you just put in. If you leave too much oil, it will become sticky and gummy the next time you heat the pan.

How to Restore a Rusty Skillet

If you accidentally left your skillet in the sink and it rusted, don't panic. You don't need to throw it away. Scrub the rust off using fine steel wool or a chainmail scrubber. Wash the pan thoroughly, dry it completely on the stove, and then perform a full oven re-seasoning process: wipe the entire pan (inside and out) with a thin layer of vegetable oil, and bake it upside down in a 400°F (200°C) oven for one hour. Let it cool in the oven.

Foods to Avoid in New Cast Iron

Until your skillet has built up a very thick layer of seasoning (which comes from cooking fatty foods like bacon and frying chicken over several months), avoid cooking highly acidic foods like tomato sauces, wine reductions, or vinegar-based glazes. The acid can eat away at a young seasoning layer and impart a metallic taste to your food.