6 Mistakes That Could Ruin Your Cast Iron Skillets (2024)

Show it some TLC and your cast iron skillet can last a lifetime—or more. Many families have generations-old cast iron that's been crisping up fried chicken and caramelizing Brussels sprouts for 150 years.

But unlike your standard department store kitchen tools, cast iron requires a bit of special treatment. That does not mean it's extremely fussy; it just has a different set of care, cleaning, and cooking rules than something like a stainless steel or ceramic skillet.

Whether you're buying new or using mom's, steer clear of these common cast iron skillet mistakes and you'll set your pan on a plan to be passed down for decades.

1. You don't allow time for the pan to heat up.

While cast iron is prized for its ability to get—and stay—scorching hot, it has a tendency to get hot spots that can lead to uneven cooking and a less non-stick sear. To prevent this, first preheat your skillet in the oven whether you're baking, frying, or sautéing what you plan to cook in it.

Place the skillet in a room temperature oven, then turn it on to 400°F or so. Allow the oven and skillet to heat up together, and once the oven reaches the set temp, the skillet should be ready to move forward with the directions in your cast iron recipe. Slip on an oven mitt, carefully remove the skillet from the oven, and go forth on your merry menu way.

2. You use the same skillet for savory and sweet.

One of the magical qualities of cast iron is that it's just as extraordinary at searing salmon as it is at crisping up the edges of brownies. But its semi-porous surface means that if you cook both of those foods in the same skillet, you might end up with fish-scented baked goods.

If possible, invest in a separate pan for uber-fragrant foods (say, garlicky sauces, seafood, anything with funky fermented ingredients) and everything else. A quality Lodge 12-inch cast iron skillet runs just $30 at Target, if you need to add another to your kitchen arsenal.

Keep Reading: Can I Use the Same Cast Iron Skillet for Sweet and Savory Foods?

3. You don't clean the pan quickly enough.

For the best and easiest results when cleaning your cast iron, tackle the tidy-up mission while the skillet is still warm from cooking your meal. For a complete how-to, check out our step-by-step guide for cleaning cast iron.

Rinse it with warm water, shake in some baking soda and/or salt, and gently dislodge any debris with a sponge, wash cloth, or nylon scrub brush (Skip the steel wool). The baking soda will help counteract any lingering flavors while acting as an antibacterial agent; the salt acts as a super-mild abrasive element; and the warm water helps lift up the particles left over from your meal.

4. You let your skillet soak.

Soaking your cast iron skillet in your sink is a recipe for rust, as is washing it in the dishwasher. Instead, clean it ASAP, even using simple soap and water if you must. As long as you rinse off all of the suds and dry the pan thoroughly and quickly after washing, the soap shouldn't harm your skillet's seasoned surface.

5. You don't re-season the skillet.

Speaking of seasoning, it's why so many home cooks prize grandma's cast iron skillet. Cast iron gets better and more non-stick with age and with repeated use, although modern cast iron skillets come handily pre-seasoned. For the uninitiated, seasoning refers to the oil that's baked onto the cast iron's surface that makes food not stick and helps keep the surface from staining.

Still, either vintage or new skillets are best served by a simple re-seasoning step after each use. After cooking, washing, and drying your skillet, place it back on a medium-high burner and add a tablespoon of neutral oil, such as vegetable or canola oil. Use a paper towel to evenly distribute the oil around the surface and interior sides of the skillet so each part is shiny. Once it starts to smoke just a bit, take the skillet off the heat, wipe it down once more with a clean paper towel, let it cool, and store until next time.

6. You store the skillet while it's still wet.

It bears repeating: Give that seasoned skillet one last wipe down before storing, if you can, since water is essentially iron's enemy number one—leading to rust, wear, and tear. While rust doesn't mean that you need to toss your skillet, it is a hassle to scrub, season, and re-season, so prevent damage before it happens by keeping your skillet dry.

If you don't have a hanging pot rack and you're worried about any scratching or scraping, layer a paper plate or kitchen towel between pans that you stack to store efficiently.

Listen to Allrecipes "Homemade" podcast to hear how Carla Hall broke her grandmother's cast iron skillet!

Keep Reading:

6 Mistakes That Could Ruin Your Cast Iron Skillets (2024)

FAQs

What will ruin a cast iron pan? ›

6 Mistakes That Could Ruin Your Cast Iron Skillets
  • You don't allow time for the pan to heat up. ...
  • You use the same skillet for savory and sweet. ...
  • You don't clean the pan quickly enough. ...
  • You let your skillet soak. ...
  • You don't re-season the skillet. ...
  • You store the skillet while it's still wet.
Jul 18, 2020

What is the biggest problem with cast iron? ›

Cast iron pans can leach a sizeable amount of iron into your food, exceeding dietary intake in some cases. Acidic foods will contribute to much more leaching while an old, heavily-seasoned pan will leach much less iron than a newer one.

Is there anything you shouldn t cook in a cast iron skillet? ›

Is There Anything You Shouldn't Cook in Your Cast-Iron Skillet? Experts Weigh In. While there's nothing that's technically off limits, the pros say you should be careful with acidic foods, like tomato or wine sauce, which can corrode the seasoning if left in the pan for too long.

How do you know if you ruined a cast iron? ›

The first and most important sign of damage for a cast iron skillet is cracking. Cracking can occur in cast iron as a result of a physical impact or because of a sudden change in temperature. For instance, if you run a hot skillet under cold water, the change in temperature can 'shock' the metal and cause cracks.

Can you permanently ruin cast iron? ›

This might look intimidating, but remember that you really can't ruin cast iron. Even if you strip away most of the seasoning, you can still rebuild it into the sleek, nonstick skillet you expect.

Are tomatoes bad for cast iron? ›

You can sauté cherry tomatoes in cast iron, but don't try making a long-simmering tomato sauce. If you recently purchased your skillet and it still needs to be "broken in," acidic ingredients can erode the seasoning and even make foods taste metallic.

What is the best oil to season cast iron with? ›

What oils can I use to season cast iron? 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.

Why did we stop using cast iron? ›

Cast iron fell out of favor in the 1960s and 1970s, as teflon-coated aluminum non-stick cookware was introduced and quickly became the item of choice in many kitchens. The decline in daily use of cast-iron cookware contributed to the closure of nearly all the iron cookware manufacturers in the United States.

Why can't you cook eggs in cast iron? ›

Eggs fall into the category of sticky foods that are not ideal for cast iron skillets that haven't built up their seasoning yet. While cast iron can become non-stick with sufficient use over time, a newer skillet will almost certainly cause your eggs to stick to its porous surface.

What foods Cannot be cooked in cast iron? ›

4 Foods You Shouldn't Cook in Cast Iron
  • Acidic foods (unless you make it snappy) ...
  • Fish (particularly delicate varieties) ...
  • Eggs. ...
  • Skillet brownies (if you just fried a batch of chicken last night) ...
  • A lot more (if your skillet isn't properly seasoned)
Mar 11, 2023

Can a little rust on cast iron hurt you? ›

Rust on cast iron is not harmful but is likely to add a metallic taste to your food if you don't address it. with very hot water and a bristle brush clean it off, then add a vegetable oil to the entire pan, inside and out, and bake the pan in a hot oven for about an hour, this will re-season the pan.

When I wipe my cast iron it's brown? ›

It's not rust, it's just the initial patina baking in. It can take a few coats of seasoning and some use to get a black finish. Don't worry about the brownish colour - go right ahead and use the pan.

What should you not clean cast iron with? ›

Avoid using metal scrubbers that will damage the cast-iron surface. And beware of rubber and plastic spatulas, especially cheap ones, as they may melt against the hot metal.

Does vinegar destroy cast iron? ›

The vinegar solution will dissolve the rust, but once that's gone, it can penetrate further and start eating away at the original cast surface of the pan, the ultimate death sentence for your skillet. If that happens, retire it to a piece of farmhouse-chic kitchen decor.

Does vinegar damage cast iron? ›

Vinegar can potentially damage cast iron pans if it's used excessively or left in prolonged contact with the pan. Vinegar is acidic and can strip away the seasoning (the layer of polymerized oil that provides non-stick properties) from the cast iron.

Can too much heat ruin a cast iron pan? ›

Sticking your skillet into a roaring fire might seem like a good way to heat it up in a hurry, but overheating or uneven heating can cause your skillet to take on a permanent warp, or even crack. Same goes for pouring cold water into a red-hot pan.

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