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Best Way to Season Cast Iron Pans - Flax Seed Oil

Best Way to Season Cast Iron Pans - Flax Seed Oil
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I try to use cast iron cookware whenever possible.  It has excellent heat dispersion properties, life long build quality, and an inherent ability to cook foods with exceptional control at both high and low heats.  It works on all kinds of stoves, electric, gas, induction - even a fire pit while camping.  

The only snag about cast iron (if you can really call it that) is the seasoning process.  "Seasoning" cast iron refers to a process of building up some amount of material, which I'll call a finish on the pan that aids in cooking, creates a semi-nonstick surface on the pan,  and protects the cast iron pan against any possible rust.

There are lots of theories on seasoning cast iron, from complex rounds of heating and oiling with different types of vegetable and animal fats, to doing nothing at all.  Having tried many of these seasoning processes myself, I feel inspired to write about the flax seed oil method.  It's the most durable and straight forward seasoning process that I've found, and the science behind the process agrees.
 
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Step 1Flax Seed Oil

Flax Seed Oil
You can find flax seed oil in the refrigerator aisle at the grocery or health food store.  Flax seed oil is the edible version of linseed oil, a very durable, hard drying finish that painters and woodworkers have been using for a very long time.  As Cheryl Canter writes on her site: "The seasoning on cast iron is formed by fat polymerization, fat polymerization is maximized with a drying oil, and flaxseed oil is the only drying oil that’s edible."

What that translates to in practical terms is a durable finish, that even after just a few coats and short term heating results in a deep glassy black seasoning on the cast iron that has held up to months of my daily usage and cooking abuse.  

As with any other cast iron pan seasoning, You don't want to use soap on the pan when cleaning it, but with this method, I've found that using a mildly abrasive sponge when doing the dishes doesn't seem to affect the finish at all.
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Jan 29, 2012. 6:30 PMBroom says:
Since this instructable is nothing more than a rewrite of Sheryl Canter's research and methodology, published quite recently on her blog, you really should give more credit to her than a single link about the chemisty. She basically wrote this for you, and you signed your name.

Plagiarism isn't ethical.
May 15, 2012. 5:07 PMWroger-Wroger says:
Sheryl Canter's research and methodology, is nothing more than a copy of my research and methodology.
May 21, 2012. 8:33 AMBroom says:
Proof?
May 21, 2012. 3:41 PMWroger-Wroger says:
You want it? You find it.

Jan 31, 2012. 9:56 AMsendit2brian says:
I do not understand those that cry "plagiarism" just because an idea or technique is similar... or even the same... as one written about elsewhere.

Was Cheryl Canter the first person EVER to use Flax oil to season her pans? I seriously doubt it... the process has been around for a loooong time. You can no more call this "Cheryl Canter's methodology" than you can say that scrap-booking was invented by Martha Stewart.

If this -ible's text and explanation is not blatantly copied from the Cheryl's blog, then the link that rapier1 provided was nice gesture that she is not required to include.

Plagiarism is a very serious accusation. The offense is taken very seriously... and so you should be very careful and serious yourself when accusing someone of plagiarism. The fact that this -ible is not at all plagiarized, only makes the accuser look bad.
Jan 30, 2012. 8:23 AMrapier1 says:
It's not plagiarism as they didn't lift the text wholesale. They could have mentioned where they got this from earlier on but the author did not claim that it was their idea. I can see why someone would be slightly annoyed that an instructable was created out of someone else's work *but* it did present the technique to a new audience. There is value in that.
Feb 6, 2012. 8:27 AMBroom says:
OK, granted, rapier1. I think my phrasing should have been, "This article is pretty obviously inspired by, and based on, Sheryl Canter's research, and more credit should have been given to her."

In which case the 'ible would be well done.
Jan 29, 2012. 7:34 PMTaerzik says:
I examined this instructable and the linked article; other than sharing the same topic and basic recipe (process), the two are substantially different. This is not plagiarism. Please be careful with accusations.

On the topic of the instructable: thank-you for putting this together here on Instructables. I hadn't really thought about it before but I'll bet my skillet would improve if i seasoned it properly and stopped washing it out with grease-cutting soap!
Jan 27, 2012. 11:28 PMRMS47 says:
Fostermoody - I've been using cast iron for about 12 years and I've heard the reports of the new way to season cast iron, which is to use Flaxseed oil.

It is food grad linseed oil, which is what oil paints are made of. Although it does season the pan, it leaves a weird taste on the food and make the pans smell a bit off.

There are hundreds of methods on seasoning cast iron, but each one uses the same way - it's heat, grease, repetition, and cool down. that's it. Whether you use vegetable shortening (which I recommend), lard, or Flaxseed oil, it's all the same principles.

Warm the pan on top of the stove, grease the inside of the pan using vegetable shortening and a cotton cloth, then increase the temperature to about 7 and allow to smoke for 10 - 12 seconds, wipe the inside of the pan again, and put in the oven to cool down. It's that simple and this will give you a good pan in which to cook.

Here's a good link I found:

http://www.purely-cast-iron.com/cast-iron-seasoning.html

Robert

Jan 29, 2012. 8:17 AMmacruadhi says:
I found the linseed oil method of seasoning months ago, I've yet to taste any strange flavours in food or smell any off odours.
Jan 29, 2012. 2:31 PMgreenfireflygirl says:
Isn't linseed oil poisonous?
May 15, 2012. 5:08 PMWroger-Wroger says:

Why don't you go LOOK IT UP? - I mean you ARE on the internet?
May 21, 2012. 5:23 AMgreenfireflygirl says:
Um, I thought this board was on the internet? And linseed oil is the stuff you use in wood finishing, flax seed oil is the edible stuff. Guess what? The internet told me that. Thanks for following the nice comment policy and not being a troll.
May 21, 2012. 6:10 AMWroger-Wroger says:
Yahhh now tell us all about how they process the potatoes to get the linseed oil out of them, and remove the excess thiamin.


Jan 30, 2012. 5:37 AMjohngriswold says:
You want to get "flax seed oil" in a grocery store, and not "linseed oil" at the hardware store. Food-grade v. industrial-grade. (one would hope they take a bit more care in its manufacture...)
Jan 29, 2012. 3:12 PMsteveastrouk says:
No, its AKA as "flax seed oil" !! I wouldn't eat the solvent extracted stuff mind you....
Jan 29, 2012. 2:47 PMjonpersonals says:
Please read first before cluttering up the board.
Jan 31, 2012. 11:54 PMBerkana says:
If you use a drying oil such as flax (walnut and hempseed also dry, BTW), it is important to make sure that there aren't added antioxidants. Sometimes antioxidants are added to prevent drying and polymerization, both of which are triggered by oxidation. In this case, oxidation of the oil is precisely what you want.

Thanks for these tips.
Those pans look beautifully seasoned, even better looking than the pans that come pre-seasoned. I've seasoned my pans using high smoke point oils, thinking that they'd give me a better seasoning, but I still ran into the same problems, where the seasoning seemed to be weak and prone to failing upon a single mistaken cleaning with detergent, or in the worst case, being run through the dishwasher (by roommates who had no idea how to care for cast iron).
May 15, 2012. 5:05 PMWroger-Wroger says:
Added antioxidants to food oil?

I thought that they were only extracted and kept tanked under argon etc., until bottling.
May 15, 2012. 6:21 PMBerkana says:
Some brands add antioxidants; others just bottle under nitrogen. (Argon is too expensive, and non-renewable, whereas nitrogen is inert enough.) I forget which brand bottles in tin bottles with those hand drawn illustrations on old fashioned labels, but that brand adds vitamin E to their easily oxidized oils. These would not be good to use for any application which specifically require the oil to oxidize thoroughly.
May 15, 2012. 8:24 PMWroger-Wroger says:
Argon = non renewable? Argon is one of the heavier gasses in the atmosphere, and it's from there it's extracted.... can't exactly waste water by peeing into the toilet you just drank from.
May 15, 2012. 9:30 PMBerkana says:
Oops. I'm mistaken. I thought all the noble gasses are produced by the petroleum industry, separated from the bygasses that come out with crude oil. Argon is the radioactive decay product of potasium-40, found in minerals deep in the ground. It turns out that helium is produced as a bygas of crude oil, but argon is fractionized from liquid air.
May 15, 2012. 10:51 PMWroger-Wroger says:
I don't know all the in's and out's of the preservative industry but taking this at a bit of a guess, yes nitrogen is sort of inert, except in the radical sense at higher temperatures and or pressures.

And there are lots of things that FEED on nitrogen and nitrogen compounds.

I am not saying this is totally correct as I know heaps but I can't be bothered to clarify stuff I have not dealt with in a long time....

But FUEL goes off in storage tanks, and the atmosphere is 80% nitrogen....

And this may in part come from the intiation of cross linking etc, from the oxygen etc.. but the only FUEL PRESERVATIVES are BIOCIDES.

Yeah from what I can gather Nitrogen is used to reduce the oxygen content to 3% and below.....to limit spoilage by oxidisation.

I have seen the wine makers shift to argon because it's heavier and it blankets the wine in the large tanks.


Anyway too much bullshit about seasoning cast iron cookware.

Just oil it and cook it.

And get a life.

Jan 27, 2012. 6:02 AMgingerkatt says:
How do you know when to re-season the pans?
May 15, 2012. 5:12 PMWroger-Wroger says:

"How do you know when to re-season the pans?"

In the same way that you know when to take your hand out of a hot fire.
Jan 27, 2012. 4:42 PMLucky7x7 says:
Season when you start seeing bare grey metal or rust spots.
Jan 27, 2012. 10:07 PMmirileh says:
I can season without removing the rust spots? (If not, any advice on removing them?)
Jan 29, 2012. 10:56 AMuncle frogy says:
I found in the trash a 10" cast iron fry pan that had been teflon coated, the coating was peeling badly and there was a lot of rust as it was left wet for a long time. I used 80 grit sand paper to get all the coating and the heavy rust off then switch to a knife sharpening stone and scouring power and water to "hone" to very smooth surface then seasoned as as a new pan.

uncle frogy
Jan 29, 2012. 6:32 AMstrehlow says:
Large patches or thick rust should be removed as it might flake off while cooking. Just rub with coarse salt or if necessary, a Scotchbrite pad. But hints of rust here and there will make no difference. The coating will soak into it and cover it up.
Feb 4, 2012. 1:52 PMthomasbandy says:
I did the steps as above exactly as written, 5 cycles in the oven - the pans look great, a smooth matte finish, silky to the touch. I tried to fry some eggs as I do every morning, and they stuck LIKE CRAZY - I cooked them in coconut oil, as usual, and I'd built up a pretty good nonstick surface before I tried this, but it's like it has a 'stick' surface - even the tiniest bit of egg white glued like cement to the surface, and I have to scrub it off with a copper scrubber. What could I have done wrong? I used very thin coats of the same organic flax oil...
Mar 8, 2012. 7:47 PMnp2jx says:

I just had to let you know that your "description" of your problems was really funny. Actually LOL'd. :-) Maybe the coconut oil is not good for seasoning. I used canola and it worked well for me.
Mar 28, 2012. 9:43 AMbodie1 says:
I was given 3 pieces of cast iron that have wooden handles. I know I can't put these in the oven, so what is the best way to get these fully seasoned?
May 15, 2012. 11:59 AMWroger-Wroger says:
Try unscrewing the handles.....

Most of the REAL cooks just start cooking - the wankers get off on "magical mystical treatments of the pan."

Gotta heat the pan with your bum pointed towards Mecca, then plunge it into Himalayan ice water, then you stand on your head and repeat "Oh mystic god of the iron wok - grant me fertility, immortality and non stock iron cookware" 522 times.....

No darling.... just scrub the pan with a scouring pad in hot water with detergent - so it is actually clean and then give it a good wipe with any food oil or butter etc., and just start cooking.

Avoid ACIDIC or really WET and SALTY foods, or cooking them for LONG periods in it...

Like chopped tinned tomatoes etc...

Other than that - knock the bullshit off and just get on with it.
May 6, 2012. 12:47 PMamnartist says:
Okay everyone, I have a couple of questions for you. I've read a few 'how to season' etc, cast iron cookware. I have 6"&10" skillets (not even sure where I got them). I took them out and they were seasoned but I did a little more just to be sure. What's the point of all the work and energy used(electric oven) to season and maintain them? I have non-stick coated cookware I've used for years that work just fine. And I'm not interested in health issues with them at the moment. My mom cooked with Teflon cookware since it first came out and at 89 years old when she passed, it didn't cause her health problem. The sizes of my cast iron skillets are not very good for most of the daily cooking I do. But I did fry sausage patties in the 10" and you know the darkish grease that seem to follow cooking them, I wiped and wiped but still I get that dark grease on my paper towels. Not sure if I would want to use it for anything else. Also, I used the 6" to melt butter(very handy might I add) but even after wiping the pan out, what's to keep from the excess butter from seeping out and going rancid? I won't be using these every day and I wonder if the grease/butter/lard will go rancid and make us sick eventually. Sorry this is so long, no other way to explain. Thanks!
Mar 30, 2012. 2:50 PMKrimm says:
I personally prefer Bacon Fat.
Mar 4, 2012. 10:55 AMkissamew says:
I have very old cast iron, inherited and donated. I don't have issues because I keep using it, but I will try this method, it could only keep my pieces great! Thank you for posting! And thanks for all the helpful comments to go with the post!
Feb 13, 2012. 11:48 PMnottauser says:
I just used my big black skillet for the first time since a friend gave it to me and it worked great! I was amazed at the fact that it cooked my eggs so well without sticking and fried the potatoes to perfection ...now I just need to get a technique down on making fried potatoes like my folks used to when I was a kid and I can call my bachelor cooking skills completed. I love cooking but have a frankenstien approach to doing it, I realize it is a science and like to learn new things. I use grape seed oil to cook and wonder if that had something to do with the slick surface for cooking? Its got the highest level of viamin E even higher than safflower oil but both are great for healthy cooking although more expensive than other oils.
I cooked on medium and no smoke or sticking! INCREDIBLE! Better than a non stick pan and less worry about teflon flakes in the food.
when its time to re-season the pan I will appreciate having your instructable to refer to,Thanks so much!
Jan 27, 2012. 10:50 AMJobar007 says:
"...flaxseed oil is the only drying oil that’s edible."

I guess she has never heard of Walnut, Hemp Seed, or Poppy Seed Oil.

This is a good way to season cast iron cookware. I use a metal scrubber to scour out my pots and pans and it hasn't affected the finish. A couple of friends of mine use different techniques. One boils water in his for 20 minutes and then wipes out while still hot. The other scrubs it with a thick paste of salt on a paper towel.

To answer gingerkatt, you would do it when things start to stick or it gets harder to clean the pot out. If you tend to cook with oils in your food, that shouldn't be for a long time if ever.
Feb 6, 2012. 3:31 PMJobar007 says:
If I had known that my comment would have created such a big stir, I probably would have reworded it. I will admit that I was typing while frustrated that walnut oil wasn't represented because it is one of my favorites (you can turn your extra into salad dressing which means no waste).

This entire thread could have been avoided if a PM was sent to me instead of calling me out in the public. I would have made the correction in my text and the whole world would have been happier. Believe it or not, there are people out there on the internet that will stick up for others, even if those others aren't "playing nice" when their comments are written poorly. My suggestion is to assume that people are inherently nice and don't mean things to be cruel unless they are blatantly being so.
Jan 31, 2012. 5:22 PMhandyman1940 says:
What about Olive, Canola,Vegetable and Grapeseed Oils to name a few more!
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