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How to Create A Non-Stick Surface on Your Cast Iron

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May 7, 2020 by Autumn 11 Comments

My journey with cast iron began many years ago, very soon after I realized that Teflon coated cookware never did any favors for anyone’s health. So I decided it was time to learn how to use cast iron in the kitchen.

The road to success was a bumpy one. It didn’t matter what kind of oil I used; everything seemed to stick. I even ruined a cast iron frying pan by attempting to cure it with a hearty coat of olive oil. Such a goopy, sticky mess I never did see!

Truth is, I almost gave up on cast iron. While I didn’t like the idea of Teflon-coated pans, cast iron just wasn’t working for me. But I didn’t want to give up, so I began doing some online research. And I soon discovered that a person can’t approach cast iron like they would Teflon.

When I was a little girl, I had learned how to cook on Teflon pans. And if I was going to learn how to cook with cast iron, I needed to re-learn everything I thought I knew.

And you’ll have to do the same!

 

Seasoning Cast Iron: the Secret to Success

Because I was accustomed to “pre-finished” pans, I never stopped to think that my pan might need help or maintenance. However, nothing could be more true of cast iron!

Cast iron’s non-stick finish is created by baked on oils. Yes, you create a non-stick surface by applying fats or oils, then baking the cookware in a 400F oven.

Once you’ve created this finish, it doesn’t mean it’s good for the next 10 years! Over time, these oils wear down and eventually, the pan begins to lose it’s non-stick qualities. As a home cook, your job is to re-season and cure your cast iron cookware every 6-12 months to maintain that finish.

Without it, cast iron cooking is a frustration indeed.

Once I understood this, things began changing and I learned how to cure cast iron for that non-stick finish we all want.

 

How to Season Cast Iron Cookware

Seasoning or curing cast iron isn’t difficult, but the process does take time and may smoke up your home a bit. I recommend that you keep your hood range vent on throughout the entire curing process. And open a window, if needed!

 

Step 1: Preheat the oven

There are varying opinions on just how hot your oven should be for the seasoning process. Some cast iron uses claim that lower temperatures are better, while some people (like myself) insist that 400F has been the sweet spot for them.

Regardless of the temperature you choose, preheat the oven while you are oiling up your pan.

 

Step 2: Apply a light layer of oil

When seasoning cast iron, be sure to use oils that have a hard finish! I prefer lard, tallow or coconut oil. If you want to learn how to render animal fats, you can get my tutorial here.

Generously apply your fats/oils to the cookware with your hand, being sure to cover the entire surface and rim. While you want your pan looking moist and wet, you actually don’t want too much oil. Excess oil results a bumpy, uneven finish.

After you’ve saturated your pan, take a paper towel and run it around the pan, removing unwanted oil. You want a very thin layer that will bake on in 45-60 minutes.

 

Step 3: Bake Cookware Upside Down

Once your cookware has been oiled, it’s time to pop it into the oven. Here’s where things get odd. Instead of curing it right side up, turn your cookware upside down. I don’t know why, but upside down pans always result in a smoother, more even finish!

Because your pan may drip, you can put a cookie sheet below to catch any oils. Otherwise, they will bake onto the bottom of your oven.

 

Step 4: Set a Timer

If you leave your cast iron in the oven for too long, you may end up burning the finish off. For this reason, I recommend setting a timer for 45-60 minutes. Be sure to check it after this time passes by.

 

Step 5: Reapply Oil and Return to Oven

After an hour has passed by, check your cookware. Does it look dry and black? Or does it still have wet-looking spots that resemble raindrops?

If it’s “dry” you’re ready for another coat. However, if it looks speckled, put it back in the oven for another 30 minutes.

 

Step 6: Repeat, Repeat, Repeat

If your cast iron has been properly cared for, you shouldn’t need more than 2, maybe 3 coats. However, when working with very old, worn down pans, I like to season my cast iron until it has a glossy, black finish.

At first, the gloss will come slowly and in patches. These shiny black spots will eventually grow until the entire pan has a sleek, black look that reflects the light. And then? It’s ready for use! And from there on, your cast iron should only need to be seasoned 1-2x per year, with 1-2 coats!

Learn how to season a cast iron skillet for a non-stick surface!

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Reader Interactions

Comments

  1. Ali says

    November 30, 2021 at 12:30 pm

    I did the seasoning treatment, and have now used my pan 3 times. Each time food sticks to it even though I use oil to cook it. How long does it take for it to become more non-stick?

    Reply
    • Autumn says

      November 30, 2021 at 12:44 pm

      Hi Ali!
      What type of oil did you use? Was it a soft or a hard-finish oil? Don’t be afraid to use 1-2 tablespoons of oil for your cooking. Also make sure the pan is thoroughly heated before you add food. That’s one of the keys to success! Let me know how it goes.

      Reply
      • Ali says

        November 30, 2021 at 8:40 pm

        I used organic flaxseed oil as I read an article that indicated this was the oil that dried the hardest and hence was recommended. I did 6 cycles which was also recommended.

        Reply
      • Ali says

        December 1, 2021 at 2:00 pm

        I used flaxseed oil after reading an article touting the hardening qualities it had. So will it take some time before it becomes more non-stick?

        Reply
        • Autumn says

          December 1, 2021 at 2:15 pm

          I’ve never used flaxseed oil before, but I wonder if you put on too many layers? I only have experience with coconut, tallow or lard. Give it some time, use lots of oil when cooking (I would try something other than flaxseed) and if worst comes to worst, you can burn off the current finish by leaving your pan the oven under high heat. And start over again with something else! Let me know how it goes!

          Reply
  2. Chelsea says

    September 4, 2021 at 10:24 am

    Can you use vegetable shortening? Also, when you’re done cooking a meal with it how do you “clean” it? I keep reading mixed things. Thanks!

    Reply
    • Autumn says

      September 8, 2021 at 1:22 pm

      I only use natural fats and oils in my kitchen, so I’ve never tried shortening. But I suspect it would work. To clean my cast iron, I simply add water and heat it up on the stove. All foodstuff wipes off then. 🙂

      Reply
  3. Dan says

    March 3, 2021 at 4:53 pm

    Would vegetable oil or olive oil be okay? My options are kind of limited.

    I have the former immediately available.

    Reply
    • Autumn says

      March 3, 2021 at 5:01 pm

      Don’t use olive oil. I know from experience that it can give your pan a sticky finish. Vegetable oil is just fine though!

      Reply
  4. Chuck Marlatt says

    February 16, 2021 at 10:57 am

    Thank You Works Well

    Reply
  5. Lota says

    January 10, 2021 at 5:32 pm

    This is really helpful, thank you

    Reply

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