The Synergy of a Blended Oil
Mixing oils like canola and olive can create a hybrid with more versatility than either oil alone. This blend allows you to leverage the best of both worlds: the robust, fruity flavor of olive oil and the high-heat stability of canola oil. By combining a more expensive, flavorful oil with a neutral, affordable one, home cooks can also manage costs without sacrificing quality for many applications.
The Nutritional Perks of a Mixed Oil
From a nutritional perspective, combining canola and olive oils offers a diverse range of benefits. Olive oil, especially extra virgin, is a cornerstone of the heart-healthy Mediterranean diet, known for its high content of monounsaturated fats (like oleic acid) and potent antioxidants called polyphenols. Canola oil, on the other hand, is known for its low saturated fat content and a favorable ratio of omega-6 to omega-3 fatty acids, which also contribute to heart health. Blending them combines these fatty acid profiles, offering a mix that is beneficial for cardiovascular health.
Culinary Applications for Blended Oils
This versatile blend is suitable for various culinary tasks where you want a hint of olive oil flavor without overpowering the dish. For example, a mixture is ideal for sautéing vegetables, creating marinades, and even baking recipes where a neutral-but-flavorful oil is desired. The ratio can be adjusted based on the desired olive oil intensity, with some chefs recommending a 30% olive to 70% canola mix for a balance of taste and function.
Important Considerations Before Mixing
While mixing oils is generally safe, there are critical considerations to keep in mind, especially regarding heat and quality.
The Smoke Point Rule
One of the most important factors when cooking with mixed oils is the smoke point. The smoke point of the mixture is not an average of the two oils; rather, it is determined by the oil with the lower smoke point. Extra virgin olive oil (EVOO) has a lower smoke point (around 320-383°F) than refined canola oil (around 460°F). This means that if you are using a blend containing EVOO, you should not heat it past the EVOO's smoke point, or it will degrade and burn, producing off-flavors and potentially harmful compounds.
Protecting Nutritional Quality
Cooking with a mixed oil at high temperatures can degrade the beneficial components. The antioxidants in extra virgin olive oil are delicate and can be destroyed by excessive heat. To preserve the health benefits and nuanced flavor of high-quality olive oil, it is best to use a blended oil for low-to-medium heat cooking, and to reserve pure, high-quality EVOO for dressings or finishing dishes.
When Not to Mix Oils
- Deep Frying: For high-heat applications like deep frying, a high-smoke-point oil like pure canola or peanut oil is preferable. Mixing in olive oil will lower the overall smoke point and lead to a quicker breakdown of the oil.
- Using Old Oil: Never mix fresh oil with used oil. The old oil will have degraded, oxidized, and may contain harmful compounds, which can contaminate the fresh oil and accelerate its breakdown.
- Flavor-Neutral Baking: For recipes where you want a perfectly neutral oil to avoid affecting the flavor, a pure, refined canola oil is the better choice.
How to Create Your Own Canola and Olive Oil Blend
Creating your own blend is simple and allows you to customize the flavor intensity. Here are the steps:
- Select Your Oils: Choose a high-quality extra virgin olive oil for flavor and a standard canola oil for heat tolerance and cost-effectiveness. Consider expeller-pressed or cold-pressed canola if you prefer less-refined options.
- Determine Your Ratio: A good starting point for a versatile, everyday oil is a ratio of one part olive oil to three parts canola oil, which provides a noticeable but not overpowering olive flavor. For a stronger flavor, increase the olive oil proportion.
- Mix and Store: Combine the oils in a clean, airtight glass bottle. Store the mixture in a cool, dark place away from heat and light to prevent oxidation and rancidity.
Canola vs. Olive Oil for Blending
| Feature | Canola Oil | Olive Oil (EVOO) | 
|---|---|---|
| Flavor | Neutral, mild. | Fruity, peppery, robust. | 
| Smoke Point | High (~460°F), ideal for high heat. | Low-to-medium (~320-383°F), best for low heat. | 
| Processing | Highly refined (bleached, deodorized). | Unrefined, cold-pressed. | 
| Saturated Fat | Very low. | Moderate. | 
| Omega-3s | Rich source of Omega-3s. | Contains very little. | 
| Antioxidants | Low to none (removed during refining). | Rich in polyphenols. | 
| Cost | Budget-friendly. | More expensive, especially EVOO. | 
| Best For Blending | Provides a high smoke point and neutral base. | Contributes flavor and antioxidants. | 
Conclusion: Mix with Intention
Mixing canola and olive oil is an excellent strategy for achieving a versatile and economical cooking fat, but it requires an understanding of what each oil brings to the table. By combining the high smoke point and neutral flavor of canola with the heart-healthy fats and rich taste of olive oil, you can create a customized blend for everyday use. Just remember that the mixture's heat tolerance is limited by the lower smoke point of the olive oil. Use your blend for moderate-heat tasks like sautéing and marinades, and save your pure, high-quality extra virgin olive oil for cold applications or as a finishing drizzle. With this knowledge, you can enjoy the benefits of both oils while making smart, healthy choices in the kitchen.