Can you Mix Oils when Deep Frying?

can you mix oils while deep frying
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You may be surprised to hear that cooking oils get mixed all the time. Maybe you don't have enough vegetable oil to fill your deep fryer, so you're tempted to add in some canola oil rather than visit the store. Regardless of the reason, yes, you can mix oils when deep frying under the right circumstances. Not every type of oil should be mixed together. 

Reasons to Mix Different Oils

  • If you don't have enough of one kind of oil to fill your deep fryer, you may decide to mix oils to fill your fryer.
  • Some people mix oils to try and maximize health benefits.
  • Some oils may be really tasty but expensive, so mixing oils may help alleviate costs while still providing some of your favorite flavors.

Why Mixing Oils is a bad Idea

Overall, when oils are being made, they're often mixed and processed in a multitude of ways. In fact, vegetable oil is usually a mix of several oils before it even hits the shelves. However, these oils are tested on a multitude of levels. Most people don't always consider everything that they should when mixing oils. These things can include the two oils chemical compatibility, the end taste, and smoke points. The bottom line is, unless you're an expert with oils, you may not be qualified to try and mix oils to your own accord.

Smoke Points and Mixing Oils

The most important thing to consider when mixing oils is each oils smoke point. The smoke point of an oil is the point in which an oil starts to smoke or catch fire. Since deep fryers have a max heating temperature of 375° F, it's definitely better to have oil with at least a 400° F smoking point.

When you're mixing oils, you should simply take the lowest smoke point among oils, and use that at your starting point. For example, if one oil has a smoke point of 350° F, and the second has a smoke point of 400° F, you need to keep your temperatures below 350° F. Even if you mix the oils at a 50/50 rate, don't try and bump your oil heat up to 375° F. If you're cooking above your oil, and you're able to not start a fire, you food may taste off, and your may be releasing unhealthy chemical combinations into your food.

Taste of Mixed Oils

Many popular oils used for deep frying has a neutral taste. This is so the oil doesn't affect the natural tasting of food. Naturally, if you're trying to mix two neutral tasting oils, you're very likely to get a neutral tasting result. No big deal. However, lets say you have coconut oil, which is considered to offer a slightly sweet taste, being mixed with a slightly bitter oil. Well, what happens when you try and mix sweet and bitter? The results may not be overly great. Hence, flavor should be considered before going off and mixing different oils.

Which Oils are safe to Mix

While we wouldn't recommend mixing oils, we know some oils are commonly mixed. As we've previously mentioned, vegetable oil already contains many different types of oils. It's already a mixed breed. That being said, its common to see people mixing different vegetable oils, such as canola, sunflower, corn, safflower, and ect.

Health Benefits of Mixing Oils

There are possibilities of added health benefits when mixing oils for cooking or deep frying. Each oil have widely different amounts of saturated and unsaturated fats. Each oil also has different levels of omega 3 and omega 6. A lot professionals believe that keeping your omega 3 and omega 6 levels as even as possible. That being said, it may make sense to mix an oil with a high amount of omega 3, with an oil that has an equally high omega 6. This could created a preferred 1:1 ratio of omegas. This is one example of trying to maximize health benefits of oil.

Common Questions

Most of the time if you're wondering if you can mix oils, it's because you're in a rush. Here are some common questions people have about mixing specific oils.

Can you mix Peanut Oil with Canola Oil? Yes. Peanut oil may have a slight taste to it, but it shouldn't have enough of a taste to impact your your final dish. Canola Oil has a lower smoke point temperature of around 400° F, so you'll want to ensure you don't get too close to that. Lastly, with peanut oil, there are mixed feelings about whether or not it's okay for those with peanut allergies.

Can you mix Vegetable Oil with Canola Oil? Yes. Vegetable oil is often a blend of different types of vegetable oils as it is. Since Canola oil comes from rapeseed or a canola plant, it doesn't sound crazy to mix the two at all. They both should have a smoke point of around 400° F as well.

Can you mix Vegetable Oil and Butter? Whether it's vegetable, peanut, olive, canola, or any sort of other oil, you need to be careful when mixing it with butter. Butter has a much lower smoke point than most frying oils. Butter's smoke point is at 300° F. This may be suitable for pan frying over a stove, but butter can't handle most deep frying temperatures.

Can you mix Olive Oil and Vegetable Oil? Yes. You should be okay mixing olive and vegetable oil as long as the olive oil has a high enough smoke point to perform your necessary duties. Most olive oils have a smoke point of at least 390° F, meaning it's safe for a deep fryer. Just make sure you're not using extra olive oil as its smoke point may be closer to 350° F.


When mixing oils while deep frying, there's a lot to consider. Because deep fryers are used at such high temperatures, the smoke points of each oil mixed is vital. While mixing oils isn't always recommended, it can allow for several benefits. Overall, mixing oil is most appropriate when you've learned more about each of the oils and their properties.

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gloyd green - April 7, 2020 Reply

normally I use sunflour oil in my deep frier, however the last time I wen to the store thy did not have sunflour oil so I had to buy canola oil. are these compatible to mix.

    The Cooking Expert - April 7, 2020 Reply

    While not ideal, you should be okay mixing sunflower oil and canola oil. It shouldn’t cause any harm.

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