Can You Season Cast Iron With Olive Oil? What Works and What Goes Sticky
Can you season cast iron with olive oil? Yes — any cooking fat will polymerise on hot iron, and olive oil is no exception. But it is not the oil most cast iron makers reach for, and if you use it the way many recipes suggest, a thick coat at a moderate oven temperature, you are likely to end up with a tacky, blotchy pan rather than a hard, slick finish. Lodge, the Tennessee cast iron maker founded in 1896, describes seasoning as "just oil baked onto the pan through a process called polymerization" and recommends a neutral oil with a high smoke point — vegetable oil, canola oil or melted shortening. This article explains the chemistry plainly, why thin coats and high heat matter more than which bottle you pick, how to make olive oil work if it is what you have, and where extra virgin olive oil genuinely earns its place in a cast iron kitchen.
For our own oil, see our Cold-Pressed Single-Estate Extra Virgin Olive Oil - Marrakech (500ml).
The Short Answer
- Yes, olive oil can season cast iron. Seasoning is fat that has been heated until it oxidises and cross-links into a hard, plastic-like film bonded to the iron, and every cooking oil can do that to some degree.
- Olive oil is a slower, softer choice for the oven bake because it is mostly oleic acid, a fat with a single double bond, and the International Olive Council's trade standard generally caps its linolenic acid at 1%. Fewer double bonds mean fewer points for the film to cross-link.
- Lodge's own guidance is a very thin layer of a neutral, high-smoke-point oil, baked upside down at 450–500°F (about 230–260°C) for one hour, then left to cool in the oven. Olive oil is not on its list of recommended oils.
- Stickiness is almost always a technique problem — too much oil, too little heat or too little time — rather than the oil itself. The fix is to bake the pan again, hotter and longer, or scrub it back and start with thinner coats.
- Many cooks prefer flaxseed, vegetable or canola oil, or shortening, for building seasoning from scratch. Extra virgin olive oil is better spent on cooking in a seasoned pan and on a light wipe after cleaning.
What Seasoning Actually Is: Polymerisation in Plain English
A seasoned cast iron pan is not "oiled" in the everyday sense. When a thin film of fat is heated on iron, the fat reacts with oxygen and its molecules join together into long, tangled chains — a polymer. The result is a dry, hard, slightly glossy layer that is chemically bonded to the metal and no longer behaves like oil at all. Lodge's care guide puts it simply: when oils or fats are heated in cast iron at a high enough temperature, they "change from a wet liquid into a slick, hardened surface."
The chemistry is the same one that makes linseed oil dry into paint and varnish. In a 2012 review in Fire Science Reviews, Juita, Dlugogorski, Kennedy and Mackie describe how "the double bonds of the unsaturated acids in the oil react with oxygen in air and with one another to form a polymeric network", and note that metal compounds, including those of iron, can catalyse that oxidative drying [1]. That is the key to understanding which oils cure fastest: the more double bonds a fat carries, the more places it has to link up.
Heat speeds the whole process up enormously, which is why cast iron makers season at oven temperatures far above what you would use to bake a cake. A pan left at room temperature with a coat of oil will slowly turn gummy; the same coat baked hot for an hour turns hard.
Why Olive Oil Is a Slower Oil to Season With
Olive oil is dominated by oleic acid, a monounsaturated fat with one double bond. The International Olive Council's current trade standard (Rev. 22, June 2026) allows oleic acid anywhere from 55% to 85% of the fatty acids in olive oil and generally limits linolenic acid — the most unsaturated common fatty acid, with three double bonds — to no more than 1%. Juita and colleagues give linseed (flaxseed) oil around 60% linolenic acid, against about 8% for soybean oil and 7% for rapeseed oil, and usually below 1% in other oils [1].
That difference matters in the oven. An oil rich in linolenic and linoleic acids cross-links quickly into a hard film; an oil built mainly on oleic acid cross-links more slowly and tends to give a softer coat from each bake. This is the same reason olive oil is prized in the kitchen: its mostly monounsaturated fat is relatively stable when heated, which is good for cooking and less helpful when you actually want the fat to oxidise and set. Our guide to olive oil at high heat covers that stability in detail.
| Oil | Linolenic acid (three double bonds) | Lodge's guidance | How it tends to behave as seasoning |
|---|---|---|---|
| Flaxseed (linseed) oil | Around 60% (Juita et al., 2012) | Not on Lodge's list | Cures hard and fast; some cooks report flaking with thick or many coats |
| Soybean oil (often sold as "vegetable oil") | About 8% (Juita et al., 2012) | Recommended — "vegetable or canola oil" | Reliable, inexpensive, even finish |
| Rapeseed / canola oil | About 7% (Juita et al., 2012) | Recommended | Reliable, inexpensive, even finish |
| Vegetable shortening | Varies by brand and blend | Recommended — "melted shortening" | A traditional choice; solid at room temperature, so easy to spread thinly |
| Olive oil | No more than 1% (IOC trade standard) | Not on Lodge's list | Works, but cures more slowly; thick coats are prone to stickiness |
None of this makes olive oil a bad oil. It makes it a slower one for this particular job, which is why many people who season with it report a tacky result the first time: they used the same thick coat that a faster-curing oil might have forgiven.
Smoke Point Is Not the Whole Story
Most advice on seasoning oils is framed around smoke point, and Lodge does recommend oils "with a high smoke point". Smoke point matters in a practical sense — a lower-smoke-point oil fills the kitchen with smoke at seasoning temperatures and can leave a darker, patchier coat. Brightland, an olive oil brand, says a high-quality extra virgin olive oil should have a smoke point "close to 400 degrees Fahrenheit", which is below Lodge's recommended 450–500°F oven.
But smoke point does not decide how hard the finish will be. Brightland itself puts flaxseed oil's smoke point at only about 225°F, yet flaxseed oil cures to one of the hardest films of any kitchen oil, because it carries so many double bonds. Olive oil's extra virgin grade also matters less here than people assume: the oven bake will strip away most of what makes good extra virgin olive oil taste and smell distinctive. For seasoning purposes, the fat structure is what counts, and a refined olive oil behaves much like an extra virgin one.
How to Season Cast Iron With Olive Oil (If You Want To)
If olive oil is the oil you have, you can still build a good coat. To season cast iron with olive oil, wipe a very thin layer over every surface of a clean, dry pan, buff off as much as you can, then bake it upside down at 450–500°F (230–260°C) for one hour and let it cool in the oven. Repeat three or more times for a durable base.
- Start clean and bone-dry. Wash the pan, dry it, then warm it on the hob or in the oven for a few minutes to drive off moisture.
- Use very little oil. A teaspoon or so is enough for a 10-inch skillet. Rub it over the cooking surface, sides, handle and underside.
- Wipe it off again. Buff with a clean, lint-free cloth until the pan looks almost dry. Lodge's test is a layer "not enough to drip or run when you tilt it" — for olive oil, err thinner still.
- Bake upside down. Place the pan upside down on the centre rack with foil on the rack below to catch drips, as Lodge recommends, so oil cannot pool in the base.
- Go hot and long. Bake at 450–500°F (230–260°C) for one hour. Graza, another olive oil brand, suggests 400°F for 30 minutes per coat; with olive oil, the hotter, longer bake gives the slower-curing fat a better chance to set fully.
- Cool in the oven, then repeat. Turn the oven off and let the pan cool inside. Two or three more thin coats will give a far tougher base than one thick one.
Why Cast Iron Goes Sticky, and How to Fix It
A sticky or tacky surface after seasoning means the fat has not fully polymerised. It is partly cured oil sitting on the pan rather than a finished film, and it is the most common complaint from people who season with olive oil. The cause is nearly always one of three things: too much oil, too low a temperature, or not enough time in the oven.
| What you see | Likely cause | Fix |
|---|---|---|
| Tacky, gummy surface all over | Coat too thick, or oven too cool | Bake again, upside down, at 450–500°F for an hour; then use thinner coats |
| Sticky drips or beads on the underside | Excess oil that pooled while baking | Scrub the drips off, re-oil very thinly, bake again |
| Brown, blotchy patches | Uneven coat or oil pooling in the base | Bake upside down; buff more thoroughly before baking |
| Surface feels soft and wears off quickly | Too few coats, or a slow-curing oil baked too briefly | Add more thin coats; consider a faster-curing oil for the base layers |
A thin tacky layer often cures if you simply bake the pan again — upside down, hot, for an hour. If the residue is thick, scrub it back with hot water, a stiff brush or coarse salt, dry the pan thoroughly, and rebuild with thinner coats. Avoid the temptation to add more oil to "fix" a sticky pan; that is usually what caused it.
There is also a freshness point worth knowing. A half-cured film is still partly liquid fat, and like any fat left exposed to air it can turn stale and smell off over time. The same is true of a bottle of olive oil left open too long — our guide to whether olive oil goes bad explains the signs.
Where Extra Virgin Olive Oil Belongs in a Cast Iron Kitchen
The honest conclusion is that extra virgin olive oil is not the most efficient oil for the oven-seasoning bake, and it is rather a waste of a good oil to cook its flavour off in an empty pan. It is, though, an excellent oil to cook with in a seasoned pan — and cooking is how seasoning is maintained and slowly built up over years.
- Everyday cooking. Sautéing vegetables, roasting potatoes, shallow-frying and searing all add fine layers of seasoning over time. Our article on olive oil for frying covers how it behaves in the everyday pan.
- The post-wash wipe. After cleaning and drying the pan, warm it briefly and wipe a few drops of oil over the surface, then buff it off. Olive oil is perfectly fine for this light maintenance coat.
- Building a base. For seasoning a new or stripped pan from bare iron, many cooks use flaxseed, vegetable or canola oil, or shortening for the first few oven coats, then cook with whatever oil they like.
One caution on cooking: a newly seasoned pan is happiest with fatty, savoury cooking for its first few weeks. Long-simmered acidic sauces, such as tomato or wine-based dishes, can wear a young coat. Eggs fried in olive oil are a good test of how slick the pan has become — see our guide to olive oil fried eggs.
Three Fair Objections
"My family has always seasoned with olive oil, and our pans are fine." That is entirely believable. Seasoning built gradually through years of cooking with olive oil works well; the problems tend to appear with a single thick oven coat on a new or stripped pan. Both experiences are true.
"Olive oil will just burn at 500°F." It will smoke — and so will most oils at seasoning temperatures. Some smoke is part of the process, because the fat is meant to break down and recombine. Keep the coat thin, open a window, and the result is a cured film, not a burnt one.
"Isn't using extra virgin olive oil for seasoning a waste of money?" Largely, yes. The bake removes most of its flavour and aroma, which is what you are paying for. Use an inexpensive oil for the oven bake and keep your good olive oil for the cooking itself.
How to Choose an Olive Oil for Cooking in Cast Iron
If you are buying olive oil to cook with in cast iron, the advice is the same as for any pan. Choose extra virgin rather than "light" or "pure" olive oil, which are refined. Look for a harvest date, a named origin and dark glass, and use the bottle within a few months of opening. For a fuller walkthrough, see our guide to choosing a quality olive oil.
Why Sidr & Stone
We would not ask you to season a bare pan with our oil — that is not where it shows its value. Where it belongs is in the seasoned pan, on the vegetables, potatoes and flatbreads that cast iron does so well. Sidr & Stone's Cold-Pressed Single-Estate Extra Virgin Olive Oil - Marrakech (500ml) is pressed from olives grown on our own family-owned farm on the plains outside Marrakech, Morocco.
- Single-estate — Sidr & Stone's olive oil comes from our own family-owned farm near Marrakech, and we control every step from tree to bottle, with no blending across origins.
- Rain-fed — our trees are not irrigated; they take what the season gives.
- Organically grown — no synthetic fertilisers, pesticides or herbicides are used (not yet certified; certification is in progress).
- Single harvest — a small, limited batch, picked when the fruit is ready; the current batch's harvest details are on the product page.
- Cold-pressed within hours of harvest — mechanical extraction only, with no solvents, refining or deodorising.
- Unfiltered extra virgin — minimally processed, so it may show natural sediment, which is normal.
- 100% natural — a single ingredient, olive oil, with nothing added.
- Dark glass with a gold label — protective packaging against light.
- 10% of profits to charity — a brand-wide commitment.
- Fulfilment in the UK, EU, and US.
We will not tell you our oil is the best oil for seasoning cast iron — it is not, and that would be the kind of claim this article warns against. What we will say is that it is single-estate Moroccan, rain-fed, organically grown and cold-pressed within hours of harvest: the unrefined extra virgin kind that tastes of something when it comes out of a hot skillet.
Frequently Asked Questions
Can you season cast iron with olive oil?
Yes. Olive oil will polymerise into a seasoning layer if it is applied very thinly and baked hot, at 450–500°F (230–260°C) for an hour. It cures more slowly than flaxseed, vegetable or canola oil, so thick coats are prone to stickiness.
Why does my cast iron feel sticky after seasoning with olive oil?
The oil has not fully polymerised — usually because the coat was too thick, the oven too cool or the bake too short. Bake the pan again upside down at a higher temperature, or scrub it back and use thinner coats.
How long should I season cast iron with olive oil?
One hour per coat at 450–500°F, then let the pan cool in the oven. Plan on at least three thin coats for a new or stripped pan.
What oil should not be used to season cast iron?
Lodge advises against beef tallow, lard and ghee for seasoning because they can go rancid. Thick coats of any oil, including olive oil, are the more common cause of a poor finish.
Is Sidr & Stone's olive oil good for cooking in cast iron?
Yes. It suits sautéing, roasting, shallow-frying and drizzling over finished dishes in a seasoned pan. We would use a cheaper neutral oil for the bare-pan oven bake.
Is flaxseed oil better than olive oil for seasoning?
It cures harder and faster because it carries far more linolenic acid, around 60% against no more than 1% in olive oil. Some cooks find it can flake if applied too thickly, so thin coats matter with any oil.
Where can I buy single-estate extra virgin olive oil?
Look for a producer that names one farm and one origin and bottles in dark glass. Ours is available to pre-order from our limited single-harvest batch, with fulfilment in the UK, EU, and US.
Is olive oil a medicine?
No. Olive oil is a food, not a medicine. It has a long traditional history — including being honoured in the Prophetic Sunnah — and a substantial body of modern research, particularly around polyphenols, cardiovascular health, and the Mediterranean diet pattern. It can be a worthwhile part of a healthy routine, but it does not cure diseases and is not a substitute for medical care. Be cautious of any olive oil marketed with specific disease-cure claims.
Final Thoughts
Olive oil can season cast iron, and plenty of well-loved pans have been seasoned with nothing else. The chemistry simply makes it a slower oil for the job: with few double bonds to link up, it needs very thin coats, a hot oven and patience, and it punishes the thick coat that leaves so many pans sticky. If you are building seasoning from bare iron, a neutral oil such as vegetable or canola, or shortening, as Lodge recommends, will get you there with less fuss.
Where extra virgin olive oil shines is afterwards — in the cooking that keeps a seasoned pan slick, and on the food that comes out of it. For more on how olive oil behaves in a hot pan, see our guide to the healthiest oil for frying.
Our Cold-Pressed Single-Estate Extra Virgin Olive Oil - Marrakech (500ml) — rain-fed, organically grown and unfiltered — is available to pre-order now from our limited single-harvest batch, with fulfilment in the UK, EU, and US.
Our extra virgin olive oil is grown organically on our own single-estate farm on the plains outside Marrakech: we control every step from tree to bottle, and no synthetic pesticides, herbicides or fertilisers are used. It is not yet certified organic — certification is in progress, and we will publish it as soon as it comes through.
References
- Juita, Dlugogorski BZ, Kennedy EM, Mackie JC. Low temperature oxidation of linseed oil: a review. Fire Science Reviews. 2012;1:3. doi:10.1186/2193-0414-1-3
Disclaimer: This article explains cast iron seasoning using manufacturer guidance from Lodge, olive oil brands' published advice, the International Olive Council's trade standard and published research available at the time of writing; manufacturer recommendations may change, and readers should check current sources and their own cookware maker's care instructions. References to Lodge, Brightland and Graza describe their published guidance and are not affiliated with or endorsed by those companies. Olive oil is a food, not a medicine, and is not a substitute for medical treatment of any condition. For any health concern, consult a qualified medical professional.