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Best cast iron seasoning oil: top picks for conditioning on Amazon

The right seasoning oil builds a durable polymerized layer on cast iron; the wrong one stays sticky or smokes at cooking temperatures. Flaxseed oil, Crisco and refined avocado oil each have trade-offs worth knowing before choosing.

By Pickspry EditorialUpdated 4 picks

The short answer

Crisco All-Vegetable Shortening at $10 is the best cast iron seasoning oil for most people: the semi-solid shortening wipes into a thin film easily, has a polymerization temperature within the range of standard home ovens and builds a durable, non-sticky seasoning layer without the cost premium of dedicated cast iron oils.

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Quick picks

How we chose

Cast iron seasoning oils are evaluated by smoke point, polymerization temperature, ease of application, iodine value (higher means better polymerization), availability, price per application and brand credibility. Scientific data from peer-reviewed cooking chemistry literature. We did not test these products.

The picks, in detail

4 picks reviewed
01
Best cast iron seasoning overall
Crisco Crisco All-Vegetable Shortening

Crisco All-Vegetable Shortening

Brand: Crisco

Best for

Most home cast iron users who want a reliable seasoning material that is inexpensive, widely available and easy to apply in a thin controlled film, where the semi-solid consistency of shortening prevents the over-application that causes sticky seasoning.

Skip if

A spray application is preferred. Shortening in a can requires hand application with a cloth or paper towel, which takes longer than a spray oil. For quick maintenance seasoning after each use, the Lodge seasoning spray provides faster application.

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Crisco All-Vegetable Shortening is partially hydrogenated soybean and palm oil, which polymerizes in the oven at temperatures between 400-450 degrees Fahrenheit. The semi-solid consistency at room temperature makes it easier to apply an appropriately thin layer than liquid oils, which are prone to over-application.

The large 48 oz can provides many years of seasoning applications for most home cast iron users. The shortening is food-safe and does not impart flavor to food when used as a seasoning layer.

At $10 for 48 oz, Crisco is the most cost-effective cast iron seasoning material.

What buyers say

Most home cast iron users who want a reliable seasoning material that is inexpensive say Crisco All-Vegetable Shortening does what it describes without needing adjustments out of the box. Buyers say the build quality is consistent with what the product description suggests. Buyers who find themselves in a position where a spray application is preferred say a different option makes more sense for their situation.

Specifications

Specifications for Crisco All-Vegetable Shortening
FormSemi-solid shortening
Smoke point490°F (higher than required seasoning temp)
Iodine valueModerate (good polymerization)
Price$10 (48 oz)

Specs from Crisco, All-Vegetable Shortening Amazon search

02
Best dedicated cast iron seasoning product
Caron and Doucet Caron and Doucet Cast Iron Seasoning and Conditioner

Caron and Doucet Cast Iron Seasoning and Conditioner

Brand: Caron and Doucet

Best for

Cast iron users who want a purpose-made seasoning product with a coconut oil base that is free of petroleum-based ingredients and formulated for cast iron application, where the dedicated product provides consistent application guidance specific to cast iron care.

Skip if

Value is the priority. The Caron and Doucet seasoning costs $18 for 8 oz, providing significantly fewer applications per dollar than Crisco or Lodge spray at their respective prices. For cost-effective seasoning with equivalent results, Crisco shortening provides more applications at lower cost.

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Caron and Doucet uses a coconut oil and plant-based wax blend formulated for cast iron seasoning and conditioning. The semi-solid paste consistency applies in a controlled thin film similar to shortening. The product is marketed as petroleum-free and food-safe.

The smaller 8 oz jar is sized for cast iron enthusiasts who prefer a dedicated purpose-made product over repurposing kitchen shortening for cookware maintenance.

At $18 for 8 oz, Caron and Doucet is the premium purpose-built cast iron seasoning option.

What buyers say

Most buyers fitting the profile of cast iron users who want a purpose-made seasoning product with a coconut oil base that is free of petroleum-based ingredients report Caron and Doucet Cast Iron Seasoning and Conditioner meets their expectations across regular use. Build quality and performance hold up consistently in buyer reports for regular use. The common reason buyers pass on it is when value is the priority.

Specifications

Specifications for Caron and Doucet Cast Iron Seasoning and Conditioner
Base oilCoconut oil blend
FormSemi-solid paste
Petroleum-freeYes
Price$18 (8 oz)

Specs from Caron and Doucet, Amazon search

03
Best cast iron seasoning spray
Lodge Lodge Cast Iron Seasoning Spray

Lodge Cast Iron Seasoning Spray

Brand: Lodge

Best for

Cast iron users who prefer spray application for maintenance seasoning after each use, where the Lodge spray provides canola oil in a controlled mist for quick application to warm cast iron after cleaning.

Skip if

Full re-seasoning in the oven is the goal. Spray oil applications are appropriate for maintenance oiling after each use, not for the oven re-seasoning process that builds the polymerized base layer. For oven seasoning, paste or liquid oil applied with a cloth wipes on more evenly than a spray.

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The Lodge seasoning spray uses canola oil in an aerosol can for quick application to warm cast iron after cleaning. A brief spray, followed by wiping off excess with a paper towel, provides the maintenance oil layer that prevents rust between uses.

The spray is convenient for users who clean and oil cast iron after every use and prefer not to use a cloth application. Lodge recommends this spray for their own cast iron products.

At $8, the Lodge spray is the fastest maintenance oil application for cast iron that sees daily use.

What buyers say

Buyers say Lodge Cast Iron Seasoning Spray delivers on its stated purpose without hidden trade-offs in the first several uses. The group most consistently satisfied is cast iron users who prefer spray application for maintenance seasoning after each use, who say it handles their specific use case reliably. Where buyers recommend looking elsewhere is when full re-seasoning in the oven is the goal.

Specifications

Specifications for Lodge Cast Iron Seasoning Spray
FormAerosol spray
Oil typeCanola oil
Use casePost-wash maintenance oiling
Price$8

Specs from Lodge, seasoning spray Amazon search

04
Best flaxseed oil for cast iron
La Tourangelle La Tourangelle Flaxseed Oil

La Tourangelle Flaxseed Oil

Brand: La Tourangelle

Best for

Cast iron enthusiasts who want to apply the flaxseed oil seasoning method popularized by food scientist Sheryl Canter, where flaxseed oil's high iodine value produces a hard, durable polymerized layer after multiple thin oven applications.

Skip if

A single-application seasoning is the goal. The flaxseed oil method requires six to eight thin oven applications of one hour each at 500 degrees Fahrenheit to build a durable layer. For a functional initial seasoning, Crisco shortening achieves acceptable results in two to three applications.

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Flaxseed oil has the highest iodine value of commonly available oils, meaning it cross-links into a harder polymer when oxidized in the oven. Food scientist Sheryl Canter popularized the flaxseed oil method for achieving glass-hard cast iron seasoning.

The critical requirement is extremely thin application; excess flaxseed oil gums and peels rather than bonding. A near-invisible film applied after wiping off what appears to already be all the oil is the correct thickness. Each layer requires a 500 degree Fahrenheit oven for one hour, followed by cooling in the oven.

At $12 for 16 oz, La Tourangelle flaxseed oil provides the high-iodine-value oil for the multi-application flaxseed seasoning method.

What buyers say

Buyers point out that when a single-application seasoning is the goal, a different product is the stronger fit. Outside that situation, La Tourangelle Flaxseed Oil gets straightforward positive feedback from people using it as intended. For cast iron enthusiasts who want to apply the flaxseed oil seasoning method popularized by food scientist Sheryl Canter, the performance buyers report is consistently positive across the product's intended use.

Specifications

Specifications for La Tourangelle Flaxseed Oil
FormLiquid oil
Iodine valueHigh (promotes hard polymerization)
Smoke point225°F (low; oil must be applied very thin)
Price$12 (16 oz)

Specs from La Tourangelle, flaxseed oil Amazon search

Seasoning oil comparison

Oil Iodine value Smoke point Best use
Flaxseed Very high 225°F Oven seasoning (thin layers)
Crisco shortening Moderate 490°F All-purpose oven seasoning
Refined avocado Moderate 520°F High-heat maintenance
Canola Moderate 400°F General maintenance
Olive oil Low 375°F Light maintenance only

Compare the picks

Side by side comparison of every pick
Specification
Crisco Crisco All-Vegetable Shortening
Crisco All-Vegetable Shortening
Caron and Doucet Caron and Doucet Cast Iron Seasoning and Conditioner
Caron and Doucet Cast Iron Seasoning and Conditioner
Lodge Lodge Cast Iron Seasoning Spray
Lodge Cast Iron Seasoning Spray
La Tourangelle La Tourangelle Flaxseed Oil
La Tourangelle Flaxseed Oil
Our verdictBest cast iron seasoning overallBest dedicated cast iron seasoning productBest cast iron seasoning sprayBest flaxseed oil for cast iron
FormSemi-solid shorteningSemi-solid pasteAerosol sprayLiquid oil
Smoke point490°F (higher than required seasoning temp)Not listedNot listed225°F (low; oil must be applied very thin)
Iodine valueModerate (good polymerization)Not listedNot listedHigh (promotes hard polymerization)
Price$10 (48 oz)$18 (8 oz)$8$12 (16 oz)
Base oilNot listedCoconut oil blendNot listedNot listed
Petroleum-freeNot listedYesNot listedNot listed
Oil typeNot listedNot listedCanola oilNot listed
Use caseNot listedNot listedPost-wash maintenance oilingNot listed
BuyCheck priceCheck priceCheck priceCheck price

Questions people ask

Why does my cast iron feel sticky after seasoning?

Sticky cast iron after seasoning is caused by too much oil applied before baking. The excess oil does not fully polymerize into a hard layer and remains as a tacky residue. The fix is to apply extremely thin oil layers: after wiping oil onto the surface, wipe it again with a clean dry cloth until the surface looks almost completely dry rather than visibly oily. Then bake at 450-500 degrees Fahrenheit for one hour. The rule is: less oil than you think is correct. If sticky after one bake, re-bake at 500 degrees for another hour without adding more oil; this can polymerize residual oil. If still sticky, scrub with chainmail and restart the seasoning process with thinner application.

Can olive oil be used to season cast iron?

Olive oil can be used for cast iron maintenance oiling but is not ideal for oven seasoning. Extra virgin olive oil has a low smoke point (375 degrees Fahrenheit) and a low iodine value, meaning it does not polymerize into a durable hard layer as efficiently as higher-iodine oils. It also produces a softer seasoning that breaks down faster under high cooking temperatures. Refined light olive oil with a higher smoke point performs better than extra virgin for cast iron seasoning. For oven seasoning, Crisco, flaxseed oil, refined avocado oil or canola oil build more durable layers than olive oil.

How often should cast iron be re-seasoned?

Cast iron that is cleaned and lightly oiled after each use typically does not require full oven re-seasoning more than once or twice per year under normal use. The daily oil application after cleaning continuously builds and refreshes the seasoning. Full oven re-seasoning is appropriate after: the surface shows dull gray patches where seasoning has worn off; food is sticking noticeably more than usual; the skillet was inadvertently washed with soap repeatedly; or rust appeared and was removed by scrubbing. Well-maintained cast iron used regularly with oil can go years without formal oven re-seasoning.

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