Best Way to Season Cast Iron Pans - Flax Seed Oil

Best Way to Season Cast Iron Pans - Flax Seed Oil
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.
 
Remove these adsRemove these ads by Signing Up
 

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.
« Previous StepDownload PDFView All StepsNext Step »
97 comments
1-40 of 97next »
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!
Jan 28, 2012. 7:24 AMoanderson says:
You could've said that first bit a little nicer :/

'We have a "be nice" comment policy. Please be positive and constructive with your comments or risk being banned from our site. '

but you do make a good point, there are other alternatives, perhaps she has other unmentioned reasons?
Jan 29, 2012. 6:33 AMsteveastrouk says:
What is there to take offence at ?
Jan 29, 2012. 12:32 PMTim.A. says:
Well..., I've been around awhile, and have always felt that grammar, punctuation, and wording can convey a lot of the emotions that are missing when body language and verbal tone are missing, such as in this forum.

I am of the opinion that the comment "I guess she never heard of..." would be taken as very sarcastic by most people.
Jan 29, 2012. 12:37 PMsteveastrouk says:
What the heck's wrong with sarcasm ? I can be sarcastic and funny, or sarcastic and nasty. I defy you to tell the diffference, given ONE sentence, followed by the OP agreeing with the orginal author !

Steve
Jan 30, 2012. 6:05 AMkennan says:
I thought it was charming. Anyway, I'm glad I read this thread before posting something similar. Sheez.
Jan 29, 2012. 2:26 PMTim.A. says:
Nothing is wrong with sarcasm itself, as long as audience gets the same meaning out of it that you put in. You've just made my point: sarcasm can be funny, or nasty, and some people will take it as one, while other's will take it as the other without clarification. Appearently, oanderson took it as not too nice of a comment, and I'm sure others will also. A smiley face or wink goes a long way toward filling in the missing parts.

There are a lot of ways to ensure that your message is not ambiquous, and that the readers get the same meaning that you were trying to convey.

Have a good day now. :-)
Jan 29, 2012. 1:12 PMoanderson says:
Look, I'm not going to start arguing with you, it's a waste of time, you are taking this far to seriously. My comment was just a pointer trying to prevent someone being slightly unkind, Tim just developed my point. That's all, good bye Steve.
Jan 29, 2012. 1:31 PMRatz says:
It just comes across as being pedantic when you complain that you might offend somone by pointing out that they are wrong. Especially in a sentence that isn't remotely offence, or degrading.

I guess you're being overly sensitive. -- i.e. I assume that is the reason.

In the originally quote the woman is stating her point as fact, when clearly she has never heard of those other oils, or bothered to look into them. (In the first case she is uninformed, in the second lazy.)

There is a significant difference to pointing something out, and pandering to the emotional reactions of others.

Policing percieved, "slightly" unkind responses is overkill.
Jan 31, 2012. 10:14 AMsendit2brian says:
Which is more overkill... the fact that oanderson called out somebody who made a comment that was insensitive at best, or else needlessly sarcastic? Or the fact that oanderson's reasoned response is getting "policed" for being too nitpicky about what comments he "polices?"

When I read Jobar007's comment, I felt it was bad form to say the least. It is not too much to ask that people attempt to be kind with their comments. And if Jobar007 simply did not realize his comment could be taken as unkind... then he needs to learn to be more careful.

Some might think it's too picky. That it's asking everyone tip toe around each others feelings.

I say that unless you are confronting someone for something they did wrong... it's common courtesy to be careful with each others feelings. If someone calls it tip toeing, or kid gloves, or "overkill"... that's just an attempt to dismiss the person you offended, as if their feelings aren't worth bothering about.
Jan 29, 2012. 2:38 PMTim.A. says:
What's the matter with a simple "There are a few more you may have forgotten about, such as walnut, hemp seed, or flaxseed seed oil"?

I would much rather be pedantic than take the chance of a comment being taken as offensive.

And the name calling is definitely offensive!
Jan 30, 2012. 6:17 AMsteveastrouk says:
...but I find pedantry offensive. Give me good honest sarcasm anyday..
Jan 29, 2012. 2:29 PMgreenfireflygirl says:
I was very surprised to see the post being flagged as possibly being banned from the site! I didn't see anything offensive, and in fact, welcomed the comment as I prefer to try this with one of the oils I already have in my possession than to rush out and buy what was toted as the ONLY edible drying oil. Thankyou for posting it, as I had never heard of it, like the original poster! Certainly this was not a mean post...
Jan 29, 2012. 3:10 PMsteveastrouk says:
Exactly.
Jan 30, 2012. 10:52 PMrealmassage says:
At the very least, this whole thread has given at least one person (yes, me) something to laugh at tonight - seriously . . . . .
Feb 2, 2012. 1:43 AMfireguard says:
I dunno... I find agreement offensive. It offends my individuality. Take that! :p~ I always like to check the comments for further information, clarifications, disagreements (with proof is better) and a little good natured ribbing. If I don't see any of that, well... it just lacks something.
Nicely done article tho. Thanx!
Jan 30, 2012. 6:54 AMcchubb says:
Why does the "no soap" mantra keep coming up. I've been cooking on cast iron all my life and I use Ultra Dawn on mine after every use, usually using either a regular sponge, or one of those twisted stainless pads if it's really caked on crusty stuff.

I usually season it every two or three years, not because it needs it regularly but because it usually suffers some kind of abuse like having something salty left in it (usually soy sauce) overnight or if the patina gets too thick and I have to clean it in the self-cleaning oven and then reseason it.

I will agree that you never want to use a brillo or other abrasive cleaner (comet, chore boy, etc.) on your iron. It's not as much the metal but the "soap" is much too aggressive. If whatever is in there is that caked on, just soak overnight in the sink, clean in the morning and wipe dry without allowing water to pool on it.

Me, I just use olive oil to season it. Flax oil is "edible" but so is mineral oil and I wouldn't want to use that in my pan.

One thing that looks different from my pans is that the pans in the picture don't appear to have a machined inner bottom, they look more rough, direct from the mold. Perhaps that's just the camera, but when the bottom of your pan isn't flat, you need to fill all of the nooks and crannies with oil to keep stuff from sticking. You have to look a lot harder to find pans with machined bottoms.

None of this comment is meant to be disparaging to the original poster and I'm sure your process works well for you and your pans. But please be aware that too many people are scared away from iron because they think it's too temperamental. I put my iron pans and dutch oven into harms way (melting candy sugar, using soy sauce, scrubbing with dish soap, sauteeing directly on the grill, frying potatoes, caramelizing pork butts, all kind of hot, acidic, salty food and they come through it just fine with little more than an oil wipe down before use and another if it's looking "tired" after washing, followed by a quick heat on the burner to about 300 degrees, then let it cool off in place.
Feb 6, 2012. 8:26 AMBroom says:
The "no soap" mantra is based on the fact that even a film one soap-molecule thick will prevent oils from latching on, and therefore will stop the "self-healing" process of blackened iron.

However, as long as pots are *thoroughly* rinsed in hot water, such films shouldn't form.

Since there's a risk in using soap, and little health risk in not using it (but otherwise following good black iron maintenance procedures), people say "no soap at all!". YMMV; sometimes I use soap for removing excess tar-like burnt oils, but usually I go soap-free on black iron.
Jan 30, 2012. 10:49 PMrealmassage says:
I agree with most of what you say here, except the soaking part. If I have stuff that is so stuck in (frequently), I simply either run straight hot water over it and set it aside for a few minutes, or if it is bad, heat it on the stove top, add screaming hot water and use the metal spatula to scrape the hard to get stuff off. After that, a hot water rinse, reheat and wipe the remaining water out with a paper towel and done. The longer soaks can tend to make it rust if it has any areas that aren't as seasoned as they should be. (or they can make my grandmother roll in her grave, as she firmly believed that too much water on cast iron ruined it)
Jan 31, 2012. 6:24 AMcchubb says:
Really, the #1 secret to having a non-stick cast iron pan is to buy one with the machined bottom. I can't stress that enough. Griswold and Wagner made awesome pans and you can still buy them on eBarf for less than the cost of new a sand-cast Lodge with a surface that looks like craters on the moon.

cast-iron-griddle-2[1].pngcast-iron-griddle-1[1].png
Jan 31, 2012. 6:16 AMcchubb says:
Thanks, I forgot about the metal spatula. It should be your first choice with cast iron, both for cooking and cleaning. Probably because I haven't been able to find one worth a darn in years at the local stores. I'm not going to drop $50+ on something special at Williams Sonoma, but the proliferation of non-stick cookware has made metal spatulas a bit of a rare thing. I just keep my eyes open at thrift stores, you can find some good ones there.

I just caramelized some onions and then roast a chicken in my dutch oven last night. Everything just popped out nicely except for some chicken skin that was burnt on. I worked late so I didn't get a chance to do dishes, so It's soaking in the sink now.
Feb 10, 2012. 12:10 PMmattsquatch says:
Just a suggestion if you have an IKEA near you. I found a great set of cheap metal cooking utensils there. I was having the same problem. I can't stand all of the plastic non-stick spatulas. They constantly melt and it just feels like you can't really ever get them clean.
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...
Feb 1, 2012. 11:29 PM4real says:
I like the finish on the flax seed pans shown at the top. They look like they are still wet. I will try this method as soon as I get some of the oil.

Read a lot of suggestions on cleaning of cast iron. If you "de-glaze" the pan, like the chefs tell you to, it removes the stuck on food
.
I take the food out of the pan and immeditately run cold water from the faucet into the pan, held at a 45 degree angle. A cotton wash cloth works just fine. The cold water "chill shocks" the pan and the food just falls off. I then return the pan to the hot burner to dry. Grandma did it that way and never had any problem.
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).
Jan 31, 2012. 5:35 PMfredstein says:
Great Post & interesting comments.

On the "which oil to use?" front, I use Rice Bran oil, cheap, available at most supermarkets, high smoke point, no edible/inedible conflict & no taste - often used in Japanese cooking for deep-frying, tempura & the like.
Jan 31, 2012. 5:31 PMhandyman1940 says:
Here's another way I season a pan that has been put up/ or that I have found at a yard/flea market sale,
I take it outside and overfill it with dead leaves and set it on fire, that gets most of the rust out, then I take it in and wash thoroughly with Dawn and a scrubber and then season with either of these, Olive,Canola or Vegetable oil's. Have never had a problem. Also when I store them in the bottom drawer of the stove I Iine each one with coffee filters and that keeps them clean. Give it a try it works GREAT.
Jan 29, 2012. 3:05 PMCommander John says:
I have 25 or so cast iron pans. I season them then I see rust. I run all of them through the dishwasher after use. If one should show a spot of rust then I wipe it with common soy bean oil. These are seasoned by use. If I get a new one I clean it and then coat it with a thin coat of oil. The thinner the better.
I heat on the stove top and any oil that beads up is removed by wiping.
Then I continue heating until it smokes. When the smoking stops the oil is caramelized and will not come off easily. Try to clean a old Waffle Iron sometime. I just heated up a round griddle to 500 degrees and it is nicely black. I use it for toasting buns as it has no sides.
If they are recoated as needed and when used they will stay black.
I usually put a little oil in the pan just before I use it, and wipe it around.
Not washing dirty pans is unsanitary which is not allowed in Restaurant use.
happiness..
john

Jan 30, 2012. 8:44 AMrapier1 says:
So my girlfriend owns a couple of restaurants and I've worked in one. You do have to clean dirty cooking surfaces but you do not have to blast them with detergents in a dishwasher. With a panini press I've cleaned it with grill bricks. Flat tops were cleaned by heating them up and then dumping a lot of water on them, scraping them, and then using a grill scrubber. You maintain the seasoning reasonable well and meet all of your local health department requirements (at least according to the ACHD regs I'm familiar with).

I can't imagine putting cast iron through a dishwasher, That's just... it hurts to think about.

Jan 31, 2012. 5:18 PMhandyman1940 says:
Back in the day (@50 yrs ago) I used white vinegar and a stone to clean the grill at the restaurant where I was a cook. Works GREAT!
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.
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 29, 2012. 2:35 PMgreenfireflygirl says:
The smoke point for flaxseed oil is very low from what I've read, something like 250F, how can this hold up for cooking in the oven? I've burned off seasoning in my pans by using the wrong oil, and even though had a beautiful finish for the top of the stove, they just can't stand the heat of the oven.

I like to use safflower oil for seasoning because it has a high smoke point, but will be interested to try walnut oil as it is a drying oil and has a high smoke point.
Jan 30, 2012. 8:46 AMrapier1 says:
The point is to carbonize the oil. If you are getting smoking *after* seasoning then the pan wasn't properly seasoned as the carbonized fat will not, and cannot, smoke. The benefit of using flaxseed, in this case, is that you can use a much cooler oven (like 325) to get it to carbonize. Once it's carbonized it will hold up to any residential oven temps.
1-40 of 97next »

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!
814
Followers
100
Author:noahw
Editor of the Workshop and Outside channels...I'm back!