Cast iron is the most durable cookware material in existence. A well-cared-for cast iron skillet can outlast the person who bought it — there are Lodge pans from the 1970s still in daily use, better than when they were new. But cast iron rewards proper care and punishes neglect. This guide covers everything you need to know to keep your cast iron in perfect condition for decades.
Why Cast Iron Is Worth the Effort
Cast iron has properties no other cookware material matches:
Heat retention. Cast iron holds heat better than stainless, aluminum, or non-stick. That’s why it produces superior sears — the pan doesn’t lose temperature when cold food hits it.
Versatility. Stovetop to oven without limitation. Cast iron handles 700°F oven temperatures without issue. It works on any heat source including induction.
Improves with age. A well-seasoned cast iron pan is genuinely non-stick for eggs and delicate proteins. The seasoning builds with every cook — older pans often outperform new ones.
Durability. Essentially indestructible under normal use. You cannot “ruin” a cast iron pan — you can strip the seasoning, cause rust, or crack it with extreme thermal shock, but even rust is fixable.
Value. A $30 Lodge skillet outperforms $150 non-stick pans on searing tasks and lasts fifty times longer.
Initial Seasoning: Step by Step
New Lodge cast iron comes pre-seasoned from the factory and is ready to use. However, additional seasoning before first use builds a better base. For any cast iron that arrives raw (or after stripping rust):
What you need:
- Flaxseed oil, vegetable shortening (Crisco), or vegetable oil
- Paper towels
- Oven
The process:
- Wash the pan with hot soapy water and a stiff brush. Dry completely.
- Place the pan in an oven set to 200°F for 15 minutes to ensure all moisture has evaporated.
- Remove from oven. Apply a very thin layer of your chosen oil all over the entire pan — including the outside, bottom, and handle. Use a paper towel to rub it in and then wipe off as much as you can. The layer should be almost invisible. Too much oil creates a sticky, gummy surface.
- Place the pan upside-down on the center oven rack with a sheet of foil on the rack below to catch any drips. Bake at 450–500°F for one hour.
- Turn off the oven. Let the pan cool inside the oven.
- Repeat steps 3–5 at least 3–4 times for a solid initial seasoning.
Best oils for seasoning:
- Flaxseed oil polymerizes best and creates a very hard finish but is expensive and can flake if applied too thickly
- Vegetable shortening (Crisco) is the traditional choice — inexpensive, effective, widely available
- Vegetable/canola oil works well and is what most people have on hand
Avoid olive oil for seasoning — it has a low smoke point and doesn’t polymerize well. It’s fine for cooking, not for building seasoning.
Daily Cleaning: What to Do
After every use while the pan is still warm:
- Rinse with hot water.
- Scrub with a stiff brush or chainmail scrubber for stubborn bits. For stuck food, add coarse salt and a little water and scrub with a paper towel.
- Dry completely. Place on the stovetop over low heat for 2–3 minutes until all visible moisture is gone.
- Apply a very thin layer of oil with a paper towel, wipe off the excess, and store.
That’s it. The whole process takes 3–4 minutes.
What NOT to Do
Soap — the great debate. Traditional advice says never use soap on cast iron. Modern dish soaps are mild enough that a small amount won’t strip seasoning. However, extended soaking or heavy use of soap will degrade it. For daily cleaning, hot water and a brush is sufficient and preferred.
Never soak in water. Even 10 minutes of soaking can cause surface rust. Wash and dry promptly.
Never put in the dishwasher. The extended moisture, heat, and caustic detergents strip seasoning and cause rust immediately.
Don’t store with the lid on. Trapped moisture causes rust. Store uncovered or with a folded paper towel between pan and lid to allow air circulation.
Avoid extended cooking of acidic foods in new or lightly seasoned pans. Tomato sauce, wine reductions, and citrus-heavy dishes can strip seasoning from pans with less than several months of built-up seasoning. Well-seasoned pans handle short-term acidic cooking fine. Enameled cast iron has no such restriction.
Re-Seasoning When Needed
You’ll know re-seasoning is needed when: food starts sticking more than usual, the surface looks dull or gray, or you’ve had to cook something that stripped the seasoning.
Re-seasoning is just the initial seasoning process — apply a thin layer of oil and bake. You don’t need to start from scratch unless there’s rust.
Restoring a Rusty Cast Iron Pan
Surface rust is not the end of a cast iron pan. It’s fixable in under an hour.
- Scrub the rust off with steel wool, coarse sandpaper, or a chainmail scrubber. Remove all rust — don’t leave any spots.
- Wash with warm soapy water to remove the steel wool particles and rust residue.
- Dry completely in a 200°F oven for 20 minutes.
- Season immediately following the initial seasoning process above (at least 2–3 rounds).
The pan will look raw and silver after rust removal. After seasoning, it will be black and ready to cook with.
Common Mistakes
Applying too much oil when seasoning. The most common mistake. Thick oil layers don’t polymerize properly and create a sticky, gummy surface that’s worse than bare metal. Thin layers — barely visible — create hard, durable seasoning.
Storing wet or damp. Even a small amount of residual moisture causes rust over days or weeks. Always dry on the stovetop over heat before storing.
Cooking eggs in a new pan. New cast iron needs several months of regular cooking to build up the seasoning required for eggs not to stick. Start with searing meats, roasting vegetables, and cooking bacon — high-fat foods that actively build seasoning.
Using metal utensils too aggressively on new seasoning. Light metal spatula use is fine, but dragging or scraping hard with metal on new seasoning can chip it. Use wood or silicone for the first few months, then metal is fine.
Thermal shock. Don’t put a very hot pan directly into cold water. Cast iron can crack. Always let it cool slightly before washing.
Storage Tips
- Store in a dry location. Avoid under-sink storage where humidity fluctuates.
- If stacking pans, place a paper towel or cloth between them to protect the seasoning.
- In humid climates, wipe a light coat of oil over the cooking surface before storing.
- A light coating of oil on the outside prevents exterior rust.
Our Top Lodge and Le Creuset Picks
Lodge
Lodge 12 Inch Cast Iron Skillet
Best-in-class value — no cast iron at any price delivers meaningfully better results
Lodge
Lodge 6 Quart Enameled Cast Iron Dutch Oven
Enameled interior means no seasoning, acid-safe, and dishwasher-friendly
The Bottom Line
Cast iron care is simpler than its reputation suggests. The core habits are: dry thoroughly after washing, apply a thin coat of oil before storing, and cook with fat regularly. Do those three things consistently and your cast iron will be in better condition in ten years than it is today.
The only cast iron that becomes unusable is cast iron that’s been ignored. Everything else — rust, stripped seasoning, gummy surfaces — is fixable in an afternoon.
