Best Oils for Seasoning Cast Iron

Best Oils for Seasoning Cast Iron

Last updated Jan 13, 2022

Posted in Kitchen & Dining

Cast iron is the best cookware for many reasons.

It doesn't scratch, it heats evenly, and it's durable.

But that doesn't mean you should throw your cast iron into the dishwasher after every use!

To keep your skillet in tip-top shape, season it with an oil of choice before each use to create a protective barrier against rust.

Each type of oil has its benefits, so read on to determine which one will work best for you!

The benefits of cast iron cookware

Cast iron cookware is known to be highly durable.

They are excellent and can withstand high heat without warping or cracking.

Cast Iron cooking pans have been used for over 200 years, starting in Germany, where they were first made!

The logic behind it was that the cast iron would prevent people from poisoning themselves with their food because of its natural nonstick qualities.

And these days, they are still widely popular due to this same quality - keeping your food tasting delicious every time you make dinner!

Purpose of seasoning cast iron cookware

Cast iron cookware needs to be seasoned because this process creates a natural nonstick coating.

This is what makes cast iron pans so great for cooking!

Strengthening your pan with oil will protect it from corrosion and rust, as well as make it super easy to clean.

It also makes the metal ready for cooking by giving it a sticky surface that food can easily cling onto when you're frying bacon or scrambling eggs in your skillet.

If you've ever tried making scrambled eggs without seasoning them first, then stretching again after strengthening them, then you know how much of a difference having an already-seasoned pan can make on getting perfectly cooked egg dishes every time!!!

How to season a cast iron

To properly care for your cast iron cookware, you should always start by washing them with hot soapy water using a sponge or stiff brush.

You can use dish soap on these surfaces but be sure not to leave them in standing water anywhere because this may cause rusting!

Then it would help if you had dried off any excess water before heating some oil.

Next, lightly apply the heated cooking surface and spread it evenly over all the pan's surfaces until no more streaks are left.

Finally, let it cool down entirely inside-out before storing away safely where children cannot reach it - especially if they have curious hands!

You should repeat this process a few times or more for the best protection.

Best oils for seasoning cast iron

There are many oils that you could use to season cast iron.

However, not all of them work equally well for this purpose.

For example, if you want your cast iron cookware to have a seasoned finish and is nonstick, then the best oil should contain saturated fat.

It should also be stable enough to withstand high temperatures without oxidizing into free radicals, making it unsuitable for seasoning purposes.

You can use many oils to season your cast iron cookware.

Still, the best ones we have found based on our experience include Peanut oil (for extra flavor), Avocado oil (because of its high smoke point and mild taste), and Coconut oil (which provides an even more durable patina than lard).

In addition to high-quality vegetable oils like peanut oil, other options are available, such as flaxseed, grapeseed, and fat, which should work well if you've got them on hand.

Avocado oil

Avocado oil is an excellent option as it won't go rancid and will protect your pan from rusting.

In addition, it has a high smoke point, which means that you can heat it to very high temperatures without breaking down the oils.

This helps new nonstick coating adhere better to your cast iron cookware.

You should be able to find avocado oil in most grocery stores or online (Amazon usually carries several brands).

Coconut oil

Yes, coconut oil is good for seasoning cast iron.

It's popular because of its health benefits, but it also works well as a cooking oil and makes an excellent natural lubricant that protects the cookware from rusting.

Corn or vegetable oil

Yes, these oils are great options when re-seasoning cast iron cookware.

Their low smoke points will not burn up like other oils while heating in the pan, which can damage the seasoned coating over time if they're left unattended.

Flaxseed oil

Well, it certainly is one of the best.

Flaxseed oil contains omega-three fatty acids, which are beneficial for your health and help give a shiny luster to cast iron cookware without being too sticky.

In addition, it penetrates the metal itself, so you don't have to season as often!

Be careful, though, because flax can be fragile if exposed to high heat or water during cooking.

If left in a pan after frying something over medium-high heat, it could discolor or even smoke up a bit due to its low flash point so take care not to leave this good stuff behind!

Most other oils will do just fine on their own, but they won't offer any extra nourishment flax does (and our cast iron needs all the nourishment it can get after enduring years of abuse).

I like flaxseed oil best for cooking, but it needs to be used carefully because it has a shallow smoking point of only 150 degrees Fahrenheit (66 Celsius).

In addition, you should not overheat flaxseed oil since that dramatically decreases its nutritional value, creating harmful free radicals that cause cellular damage much in the same way as fried foods do.

If you decide on using this type of oil, make sure that the temperature never rises above 350 F (176 C) to retain all its health benefits!

Grapeseed oil

Grapeseed has a high smoke point making it an excellent choice for seasoning your new cookware piece or re-seasoning your old one.

It also smells great when heated, so you can "bake in" the flavor without worrying about toxic fumes being released into kitchen air, unlike some other oils, which give off nasty odors while cooking at higher heats.

Use refined grapeseed instead of unrefined to avoid that natural grape scent.

This will help prolong its shelf life and keep ideal consistency after heating multiple times over time.


Traditionally, people have always used lard or shortening to season their pans because they're inexpensive and work well at creating a nonstick coating on the pan's surface that is virtually indestructible.

In addition, most experts will recommend using lard over another fat due to its stable structure when heated up (which means it won't turn rancid) and its slight acidic quality which helps create more carbonized bits during high-heating processes in dishes like caramelizing or searing.

Olive oil

Most will say "no." But you can use it if your cooking oil is always olive and not other oils like peanut or coconut.

Let discuss some FAQs about seasoning cast iron pans.

Do you season cast iron every time you use it?

You should!

Not only does it give your cookware a nonstick surface, but it also helps prevent rust and makes cleanup easier.

What is the best temperature to season cast iron?

You should season cast iron at 350 degrees Fahrenheit.

What happens if you don't season a cast iron pan is?

It can rust and make everything taste bad.

Even though it's easy to season a cast iron pan, people still don't know how or forget the steps because they're used to using nonstick pans.

Can you ruin a cast iron pan by seasoning it with the wrong oil?


You can use any cooking oil to season your cast iron cookware, though some are better than others.

Why is my cast iron pan sticky after seasoning?

After you season the cast iron pan, it will become sticky.

This occurs due to excess oil, which can be removed by cooking in the hot skillet or with paper towels and salt.

The excessive amount of oil is also a safety hazard when applying heat if not enough has been applied before use.

After using your seasoned cast iron for several years, it may start to stick again after long-term storage without any help.

Try re-seasoning it.

Can you over-season cast iron?


What happens is that excess oil and seasoning will build up over time, which can cause the pan to stick or make it taste like burnt food.

Why do you season a cast iron pan upside down?

The same reason you season a wok upside down: it allows the oil to pool around and into all of those little nooks and crannies that are hard to get at.

This is especially important when seasoning an enameled cast iron pot such as Le Creuset, which has many tiny crevices on its interior surface.

How do you fix a poorly seasoned cast iron pan?

The first thing is to clean the pan.

If you do not remove the old seasoning, it will only build up and become worse than ever before!

Soak your now thoroughly cleaned cast iron in warm water for about 30 minutes or so.

Use a plastic scrubber (like those used on dishes) with hot water and dish soap; use as much elbow grease as needed to get all of that stubborn gunk off of there.

Dry immediately after washing by putting back overheating if possible, otherwise dry with paper towels.

Put some oil into it, then wipe most away with paper towels; this ensures that excess fat doesn't end up causing uneven cooking later on (just like too little oil can give you an equally unsatisfactory result).

Once you have wiped the majority of excess fat away, place your pan over medium heat for about five minutes or so.

You can then take it off and wipe it again with paper towels; now, the pan is seasoned!


Cast-iron pans are a staple in many kitchens, and you can season them to make them nonstick.

But what is the best oil for seasoning cast iron?

The answer depends on your preferences, but we recommend using vegetable or peanut oils because these types of oils have higher smoking points than other cooking oils like olive oil.

A little bit goes a long way when it comes to seasoning cast-iron cookware with an oily substance.

The more you use at once, the less likely you'll need to re-season often!