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    Why olive oil is bad for your stir-fry

    We all know that certain oils are healthier than others, but your oil health goes beyond just the type. The health of your oil can be related to how you use it too.

    Each type of oil has what is called a "smoke point." The smoke point is the specific temperature at which the oil starts to break down…or in more technical terms, its molecular structure begins to change. These molecular changes result in changes in flavor, as well as changes in nutritional value…specifically, the nutritional value of the oil starts to degrade; changing what once may have been considered an especially healthy oil (such as Olive or Flaxseed which is rich in Omega-3s), into one that is unhealthy.

    The higher an oil's smoke point, the higher the temperature the oil can withstand. As a result, each type of oil should be used for the cooking method that is most appropriate to its individual smoke point and heat tolerance. Here is a quick guide for the next time you reach for your favorite oil.

    Heat
    During Cooking
    Oil Best Use
    No-Heat Flaxseed Salads
    Low to Moderate Coconut Baking (low heat)
    Light Sautéing
    Pressure Cooking
    Salads
    Corn
    Olive
    Sesame
    Walnut
    Medium Heat Macadamia Nut Baking (medium heat)
    Sautéing
    Stir-Fry
    Peanut
    Safflower
    Canola
    High Heat Avocado Deep Browning
    Deep-Frying
    Searing
    Grapeseed
    Sunflower
    Soybean / Soy

    Most oils we buy are refined. Refined oils tend to have much higher smoke points than their unrefined counterparts. They also differ in nutrition and flavor. Unrefined oils are more nutritious (some of oils' nutrients are removed during the refining process) and they tend to be much richer in flavor. For instance, unrefined peanut oil will smell and taste just like peanuts, while refined peanut oil will have a lighter smell and taste.

    When it comes to extremely high heat cooking, always choose oils which are refined. If, however, you are anxious to have a salad with a rich taste, splurge on the unrefined variety if your palate so desires!

    What is your favorite oil to cook with?

    Excerpted from "GET REAL" and STOP Dieting! Copyright 2009 - Brett Blumenthal


    Eat Healthy without Dieting! Make a fresh start with #1 Bestseller "GET REAL" and STOP Dieting! - the most simple, straightforward, no-nonsense plan that reveals how to eat healthy today, tomorrow and always...without dieting! BUY IT NOW!



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    241 comments

    • David  •  9 months ago
      This is a very misleading article. It boils down to how a specific oil is processed MUCH more than the type of oil itself.

      Extra Virgin Olive Oil does have a relatively low smoke point of 375F, but unrefined Sunflower Oil has a super low smoke point of 225F. Extra Light Olive Oil has a smoke point of 468F, higher than virtually everything else on this list.

      This article is comparing the bad-for-stir-frying forms of some oils vs good-for-stir-frying forms of other oils. Apples and Oranges. To get the real story, do your own research!
    • sunny  •  2 years 3 months ago
      where do you purchase un-refined oils?
    • Davina  •  2 years 3 months ago
      I am very concerned with the ideal that coconut oil is listed. It is saturated fat, and is on the bad list for nutritional content. I do wonder what nutritional expertise the person has that wrote this article, if they have been paid for this advice or recommendations, and what chemistry back ground they may also have. Now lets talk about that smoke point.

      "According to the International Olive Oil Council: Virgin olive oils have a flash point of 410 -428 Fahrenheit"

      http://ucce.ucdavis.edu/files/filelibrary/2161/34496.pdf

      This is classic according to the peanut company in Australia “Using peanut oil can also be safer. Peanut oil withstands higher temperatures without burning or breaking down. It has a high flash point (282 degrees Celsius) which makes it ideal for deep frying.”

      http://www.pca.com.au/nutrition.php?subaction=showfull&id=1206690755&archive=&start_from=&ucat=14&

      May be that the author did not know how to convert Celsius to Fahrenheit. That would give peanut oil a smoke point of 539 Fahrenheit

      I have to say that your facts just do not line up very well, someone please take this article off the web. Misinformation is worst then no information!
    • Smago  •  2 years 3 months ago
      first of in Italy where olive oil comes from generally, they dont use olive oil for frying french fries they use it for salad and or cooking something quick.
      In asia where we all fry everything sunflower is still the best, its affordable and taste is neutral, canola oil is the most expensive oil and availability esp. in Asian countries is rare.
    • Rich  •  2 years 3 months ago
      Horrible article. Throw some olive oil, salt and pepper onto a steak and you have perfection. Smoke is good!!!!!!!!!!!!!!!!!!!!
    • joanne  •  2 years 3 months ago
      What about grapeseed oil?
    • Mamta Mukerjee  •  2 years 3 months ago
      Heating canola/olive oil during the cooking process, in general, can denature it to a saturated fat. Best to use water in the cooking process and then add a small amount of oil at the end. For olive oil, you can add more at the end for flavor, like in spaghetti sauces.
    • William  •  2 years 3 months ago
      As a former chef, and always looking for the best product, I stumbled across one that is not on your list. Grape seed oil is not always as easy to find as some of the others here, but it can be found. One might need to seek it out in specialty stores, although I have found it in Fry's (Arizona). I was told it has a high temp rating at close to 800 degrees (F), although I have not tried it to that point. I can say that it does not carry a strong distinctive flavor, which makes it ideal for higher temp cooking.
    • levy  •  2 years 3 months ago
      what about the vegetable oil?
    • Ishwari  •  2 years 3 months ago
      I just want to know the difference between pure olive oil and the pomace olive oil.Can the pomace olive oil be use for cooking.Please do let me know thanks.
    • Pitotoy  •  2 years 3 months ago
      DO YOU REALLY KNOW ABOUT OIL? Better research again baby
    • David  •  2 years 3 months ago
      Should have included temp ranges.
    • Ranger5  •  2 years 3 months ago
      It would be helpful if you gave temp ranges for "low", "med", & "hi".
      Thanks
    • JohnS  •  2 years 3 months ago
      This directly contradicts the American Heart Association website, http://www.americanheart.org/presenter.jhtml?identifier=3049379, which recommends peanut oil and several others for extended deep-frying. Not sure where this info came from but definitely misleading.
    • TruthDefender  •  2 years 3 months ago
      I'm confused. Why, then, do so many people deep fry in peanut oil? Other than the facrt that it doesn't absorb the flavor from the food being cooked?
    • sarahw  •  2 years 3 months ago
      Yeah, please tell this to my friend's Mom who uses olive oil for flipping everything and doesn't believe me when I tell her that you HAVE to use other oil sometimes.
    • Suzanne  •  2 years 3 months ago
      Good information. I've been using grapeseed oil, because it has an extremely high smoke point. It has a wonderful buttery flavor and it works well in baking as well as stir fries.
    • Brett Blumenthal - Sheer ...  •  2 years 3 months ago
      Extra Light Olive oil is not olive oil...it is a watered down version. I wouldn't recommend it.
    • Brett Blumenthal - Sheer ...  •  2 years 3 months ago
      For those of you who think Canola is unhealthy, please read this article: http://nutritiondiva.quickanddirtytips.com/canola-controversy.aspx and http://www.mayoclinic.com/health/canola-oil/AN01281
    • boggoboy  •  2 years 3 months ago
      Mindless, scare-everybody junk.

      If you are going to scare everybody out of using the oil they cook with, why not BE SPECIFIC about what happens to these oils above their smoke points --- in terms of taste, appearance, and "health" ? In other words, instead of scaring us, why not tell us how to know if the oil we are using is not up to the task? If it is not working, does it start to smell, smoke, taste bad, or explode, or what ??? Or do the police just come to your kitchen door ?

      And when you talk about oils for various uses, how about (what the guy asked about) peanut oil, which many people use for FRYING TURKEYS, and you label as good only for "low to moderate" heat ? I've never seen it burn or smoke in a turkey cooker. So, what is your evidence ?

      Where did you get your information, and why should we believe it ?

      Boggoboy

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