How to Restore Rusty Cast Iron (2023)

FAQs

Can rusted cast iron be restored? ›

Cast-iron skillets are naturally prone to rust. But even if it has turned bright orange, the pot absolutely can be fixed. (Even if you snag an old, rusty skillet at the flea market, that orange will come off!) It only takes a few simple steps to have your rusted cast iron looking brand-new.

1. Soak your cast iron in vinegar (or don't). If you're dealing with minor surface rust, you can probably skip this step, opting instead to use a scouring pad or kitchen towel to rub about ⅓ cup kosher salt into the surface of the pan until the spots of rust have been removed.

The easiest way to remove rust from cast iron is to soak the pan in a 1:1 vinegar and water solution. Then scrub the rust off with a scrubby sponge, scrub brush, or steel wool.

Vinegar is renowned as one of the best rust removers because the acid lifts rust effortlessly due to the iron oxide displacing the hydrogen ion in the acid. Citric acid from the lime is a mild acid that won't corrode the metal underneath the rust, but it provides a potent concoction that fights the oxidation process.

WD-40 Specialist_® Rust Remover Soak quickly dissolves rust and restores tools, equipment, and surfaces to bare metal without chipping, scraping or scrubbing. Great for removing rust from tools, metal, cast iron, chrome parts, and more without harming paint, gaskets, trim, or other surrounding parts.

If your Cast Iron Stove Top has been rusted or stained, there are many simple ways to get it cleaned up. For example, you could try soaking it in a mildly acidic fluid such as white vinegar or using aluminium foil. Alternatively, you could try products that are designed to remove rust, such as WD-40.

Remove all the rust: Use fine steel wool to remove rust from affected areas. Scour the skillet until the area returns to raw cast iron. Wash the skillet thoroughly: Wash the cast iron with warm water and mild dish soap. Scrub with bristle brush, gentle scouring pad, or mesh sponge if needed.

Mix together equal parts basic white vinegar and water, and either add the solution to the pan if it's rusty only on the inside or completely submerge the pan in a bucket of the stuff to dissolve the rust all over. Letting it soak for about an hour should do the trick, depending on the damage.

We do not recommend using CLR Calcium, Lime and Rust Remover on cast iron. The acids in CLR Calcium, Lime and Rust Remover can compromise the metal.

Can I use CLR on rusty cast iron? ›

Can I clean cast iron with CLR? No, CLR cannot be used on cast iron; the acids in CLR will react with the metal.

Baking soda is one way of cleaning cast iron pans, but it's not advised to remove rust with vinegar and baking soda together. In fact, baking soda is best used to remove stubborn food stains or black residue, rather than rust.

Method: Leave your rusty item in white vinegar submerged fully overnight. Once soaked, remove and scrape the rust with a metal brush or steel wool. For items that cannot be removed and submerged, you can soak a rag in white vinegar and wrap around the rusted area.

Coca-Cola is carbonated, which allows it to dissolve with metal oxides and break up rust on a variety of metals and alloys. Phosphoric acid also gives it rust-busting power, while citric acid makes it an effective stain remover.

Can I clean cast iron with CLR Calcium, Lime and Rust Remover? We do not recommend using CLR Calcium, Lime and Rust Remover on cast iron. The acids in CLR Calcium, Lime and Rust Remover can compromise the metal.

Will soap ruin cast iron? Using soap will not ruin your pan. It is totally fine on enameled cast iron, and on plain cast iron, too. It's not going to destroy your seasoning.

All cooking oils and fats can be used for seasoning cast iron, but based on availability, affordability, effectiveness, and having a high smoke point, Lodge recommends vegetable oil, melted shortening, or canola oil, like our Seasoning Spray.

WD-40 can help remove rust from metals like iron, chrome, and stainless steel without further damaging the surface of the metal or removing the paint. The Multi-Use Product is great for loosening and removing excessive surface rust.

Wash your cast iron cookware by hand. You can use a small amount of soap. If needed, use a pan scraper for stuck on food. For stubborn, stuck-on food, simmer a little water for 3-5 minutes, then use the scraper after the pan has cooled.

Can I use steel wool on cast iron? ›

Use a fine grade steel wool pad and scrub the pan surface, inside and out, to remove rust and debris. Wash the residue with hot water and mild soap if needed. Once you have cleaned all the residue off the cast iron skillet, wash and dry your skillet as noted.

You can use two methods to give cast iron a good scrub: salt or a stiff brush. Pour a quarter cup of salt into your pan and use a flat-edged kitchen utensil to push the salt around the pan. The salt will begin to discolor as you scrub. Remove all grains from the pain to avoid corrosion, then apply a light coat of oil.

To strip your cast iron pans in the oven, set them upside down on the middle rack, close the door and run the self-cleaning setting. Allow your pans to cool in the oven, then remove and wash with hot soapy water and, if needed, some steel wool to remove any remaining seasoning, rust or flakes.

All cooking oils and fats can be used for seasoning cast iron, but based on availability, affordability, effectiveness, and having a high smoke point, Lodge recommends vegetable oil, melted shortening, or canola oil, like our Seasoning Spray.

The Fix: To remove any loose flakes, lightly scour the cookware, then season it by rubbing the pan with a thin layer of oil, placing it in the oven upside down, and baking for one hour at 450-500 degrees F. Line the bottom rack of your oven with aluminum foil to catch any excess oil.

Keep checking it, because leaving the pan in vinegar too long—once the rust has been loosened—will start to damage the cast iron itself. Once the soak is complete, gently scrub the rust away from the cast iron pan with your scrubber.

In a nutshell, this is how to clean your cast-iron skillet: Immediately after cooking, rinse in warm water, sprinkle with a bit of baking soda, and scrub gently with a nylon brush. The baking soda neutralizes any flavors and odors from what you've just cooked, and has anti-bacterial properties.

Here's what I found out about cleaning rust: Dawn dish soap and white vinegar: You can either pour the Dawn on the stain (it has to be Dawn), then the vinegar on top and mix them into a paste, or mix the two together in a spray bottle (if your stains are on a vertical surface).

But stay away from Dawn. It will remove your seasoning and make it harder to keep your pans in good shape. So, bottom line, never use Dawn on your cast iron pan. You might think your getting your pan cleaner, but in fact, you're making it harder to create and maintain your seasoning.

It Makes a Great Cleaner

You can also use it to scrub skillets and pans. Just make sure you don't use it on non-stick pans since it can damage the non-stick finish, which can be dangerous for your health. Use it on cast iron and other pans mixed with soap. It's a great way to remove stubborn stuck on bits.

Does vinegar damage cast iron? ›

Don't fill your cast-iron cookware with wine or vinegar. A splash for sauce or deglazing is OK, but tossing a significant amount straight into the pan undiluted will ruin your cookware, and your health.

Allow your rusty items to soak for around ten minutes. Any stubborn rust spots should now be easier to scrub away. If you item is too big to soak, or cannot easily be removed, simply pour or spray vinegar directly over the rusty area; allow it to soak and scrub off the rust.

After you've used your skillet, use a sponge to scrub it with water. But don't let it soak in water, as this can cause rusting. If it still needs a bit more attention, add some kosher salt to the pan and scrub with a damp sponge. The salt acts an abrasive cleaner without disturbing the seasoning.

To tackle items with significant corrosion, submerge your rusty tools or knives in a bowl of white vinegar and let them sit overnight or as long as 24 hours. Once they have had a good soak, remove them from the vinegar and scrub the rust off with steel wool, a scouring pad, or a wire brush.

White Vinegar

It is very effective as a rust remover as the rust simply reacts with the vinegar and dissolves. If the item you are removing rust from is small enough to be submerged in a bath of white vinegar, simply leave it in there for a few hours and then wipe the paste off.

Baking Soda (Bicarbonate of Soda) The rusted item can either be dusted with baking soda, or made into a paste with water or vinegar. Apply to the areas and leave for a an hour or so then clean off with a brush.

You'll want to use a really tough sandpaper. I used 60-grit because I wanted to get off as much of that rust with every swipe as possible. Yes, it's gonna scratch the surface of your skillet a bit, but it's going to be fine.

The Cause:

Rust forms when the cookware is exposed to moisture for extended periods of time and is not harmful in any way. If cast iron is left in the sink to soak, put in the dishwasher, or allowed to air dry, it will rust.

How do you restore cast iron with salt? ›

To remove stubborn bits of food, pour 1 cup coarse kosher salt into the still-warm skillet. Use a folded kitchen towel to scour. Discard the salt and rinse the skillet with hot water. Dry immediately with a kitchen towel, or heat skillet over a medium-low flame to evaporate the moisture.

Use a 60 - 80 grit sanding pad or sandpaper, and get to work on the pan.

Place the cast iron in the middle rack of a conventional oven with a baking sheet underneath. Set the oven to the self-clean cycle. This will burn off all the old seasoning and build up and leave you with a bare piece of cast iron.

In fact, with a few simple tools and a little elbow grease, there are plenty of ways to thoroughly remove rust from cast iron. Experts at the University of Illinois at Urbana-Champaign agree that a little bit of rust on cookware isn't likely to harm you. (Even rust in drinking water isn't considered a health hazard.)

Generously sprinkle kosher salt or coarse sea salt into the pan and scrub it with a clean, damp washcloth. For extra stubborn spots, use a plastic pan scraper to work the burned food off the pan.

Here's another kitchen no-no: Don't use steel wool cleaning pads on your cast iron cookware. If you use cast iron a lot, you probably know how important its protective seasoning is, and so does John Bedford, founder and editor of Viva Flavor, a food company that also specializes in cookware maintenance.

The simplest way to remove a lot of rust from cast iron is to make a slurry of Bar Keepers Friend and a couple of tablespoons of water in the pan and scrub the rust off using a stainless steel scrubber. We recommend wearing rubber gloves. Again, wash, dry, and re-season your pan afterward.