We use a Deep Fryer often here at My Keto Kitchen for a variety of our low-carb recipes they’re great for a variety of meals and of course, give you that little extra fat needed for energy on a ketogenic diet.
Chef also uses a Commercial Deep Fryer as she tends to cook for larger groups and dinner parties more than the rest of us for that she always uses oil that does not solidify such as Peanut Oil so we pressed her on what the best oil for deep frying is.
The Best Oil For Deep Frying Has A High Smoke Point
Below are some tips Chef gave us for choosing the best oil for deep frying.
The best oils for deep frying should:
- Have a high smoke point. High smoke point cooking fats make the best oils for deep frying, as the temperature that you deep fry at is very important.
- The best frying temperature is between 170°C/340°F and 190°C/375°F. Lower cooking temperatures will cause the food to soak up oil, and higher temperatures will burn the food before it is cooked through. She keeps her deep fryer set at 180°C/355°F for best results.
- Another thing to consider is price. Deep frying requires a large volume of oil and some oils simply aren’t practical to use in a deep fryer.
- Do not use fats that solidify when cool in deep fryers with submersible elements. That means lard, tallow, coconut oil, etc. There are inexpensive alternatives here or at the bottom of this page.
- Gas powered commercial deep fryers are generally fine if you’re unsure check your product manual.
Tallow For Deep Frying
If you’re looking for fat that fits right in with a ketogenic diet, tallow along with lard, are your go-to fats. Tallow is rendered beef fat and it is perfect for LCHF diets. It has a high smoke point of 400°F/250°C.
Tallow is also high in Vitamin D which is great for your bones. Besides the proven benefits of saturated fats in low-carb diets, food fried in tallow just tastes great.
- High in antioxidants.
- Tallow is high in CLA (omega-3s) which has been proven to reduce incidences of heart disease and protect against cancer.
- Tallow is high in vitamin A, vitamin D, vitamin E, and vitamin K.
- Outside of using Tallow for deep frying, people have used Tallow for cosmetics, and as an application to the skin as it tightens and promotes cell regeneration. Make some soap with it too, if you like 😉
- Tallow is 42% monounsaturated fat, 4% polyunsaturated fat, and 50% Saturated fat (the notion that saturated fat is bad is wrong in an LCHF diet and has been proven so, see references below. People on low-carb, high-fat diets usually see a marked improvement in bad cholesterol and triglyceride levels or at least no change at all).
All of the above-stated facts is what tips Tallow slightly in front of Lard as the best oil for deep frying in our mind. That low polyunsaturated and near 1:1 ratio of Monounsaturated and Saturated fats makes it great for LCHF cooking.
You can buy tallow here.
Lard For Deep Frying
Lard is rendered pig fat. After tallow, we consider larding the next best oil for deep frying and shallow frying.
Lard consists of 39% Saturated fat, 45% monounsaturated fat, and 11% polyunsaturated fat. It has a high smoke point of 374°F/190°C slightly less than Tallow.
The smoke point is why we rank it just behind tallow as the best oil for deep frying.
We’ve found that due to its higher smoke point we get a slightly crispier result from Tallow and that it seals the food quicker.
- Lard has a high smoke point of 374°F/190°C slightly less than Tallow.
- Lard consists of 39% Saturated fat, 45% monounsaturated fat, and 11% polyunsaturated fat.
- Lard contains oleic acid, the same found in olive oil. Oleic Acid is shown to lower LDL (bad) cholesterol.
- Lard is somewhat less expensive than Tallow.
- Lard is neutral flavored. It does not infuse the food you’re cooking, with any taste like some oils like coconut oil might.
Tip: Get non-hydrogenated lard if you can afford it as it’s healthier for you. In saying that, I would use hydrogenated lard over vegetable and seed oils every day of the week, so don’t panic. Hydrogenated lard most often contains less than 4grams of trans fat per 100g, when used for deep frying you consume hardly any of that.
You can buy lard here.
Peanut Oil For Deep Frying
Peanut oil is certainly the most popular and most cost-effective oil for deep frying. But its nutrition profile isn’t as good as tallow or lard for deep frying food.
When cooking at the very high heat Peanut oil is capable of, very little of that Omega-6 is transferred to the food being fried. Peanut oil is fine to deep fry with, that’s all we use it for though.
Peanut oil is 17% saturated fat, 46% monounsaturated fat, and 32% polyunsaturated fat.
We certainly wouldn’t use peanut oil in a frying pan at lower temperatures or over a salad, but it is the best oil for deep frying and a cost-effective “alternative” to animal fats.
Peanut Oil Facts:
- It does not transfer any flavor to the food you’re cooking.
- Peanut oil is 17% saturated fat, 46% monounsaturated fat and 32% polyunsaturated fat.
- It has a very high smoke point of about 450 degrees Fahrenheit (230 degrees Celsius).
- It can be used over and over for many meals as it does not absorb any of the flavors from the food being cooked.
- Has a neutral taste, it doesn’t taste like peanuts.
- It’s quite affordable.
You can buy peanut oil here.
Coconut Oil For Deep Frying
Coconut Oil can be used for deep frying, it’s an excellent oil and you won’t read a ketogenic or LCHF diet forum that doesn’t mention its powers.
Coconut oil is very high in saturated fats and has a high smoke point. But it is expensive and does have a strong coconut flavor. We leave coconut oil away from deep frying and keep it as an ingredient in things like fat bombs or shallow frying, along with butter.
But hey, you can do as you please, coconut oil has some fantastic benefits as both a cooking oil, recipe ingredient, by the spoonful or even to moisturize your hair and skin.
You can buy coconut oil here.
Deep Fryer For Cooking Solidifying Fats
The one drawback of using oils such as lard, tallow, or coconut oil is that they set solid. Due to this, you cannot use them in deep fryers with a submersible element like the common deep fryers you may see such as this Tefal deep fryer.
What you want to look for is a Deep Fryer with the element sealed or underneath the unit (so no fat/oil comes in contact with the element).
Your Deep Fryer should look like this on the inside, with no element visible for cooking with fats such as lard, tallow or coconut oil.
This Delonghi Deep Fryer is perfect. Its easy to clean and easy to empty. I own the Delonghi deep fryer above.
But we’ve used this simpler more versatile option that we like as well, as it can be used for other cooking applications such as steaming and heating.
Oils That You Should Not Use for Deep Frying
While Extra Virgin Olive Oil and Flaxseed Oil are fantastic for your diet, they shouldn’t be used for deep frying. These oils oxidize and form free radicals at high temperatures so are best served at much cooler temperatures (cold for flaxseed).
You will also want to avoid oils dominant in “processed” polyunsaturated fats and high ratios of Omega-6 fatty acids. Most modern diets contain oils such as processed sunflower oil, soybean oil, and corn oil, these oils more often than not are processed polyunsaturated fats and have far too high a ratio of Omega-6 fatty acids to Omega-3s.
While we need an even ratio of Omega-6s to Omega-3s most modern societies consume way too much Omega-6 fatty acids and not nearly enough Omega-3s. The ideal ratio is 1:1 the average western population is about 16:1 which has many many health consequences.
Peanut oil teeters but is fine for deep frying as you consume very little of the bad stuff when cooked at high temps. You wouldn’t drizzle it over your salad though. Your aim is more saturated fats and omega-3 fatty acids, “natural” polyunsaturated fats, monounsaturated fats and “natural” trans fats.