"Did you know that the Mob makes money hand over fist by selling you fake olive oil? Olive oil is a $1.5 billion industry in the United States alone. According to Tom Mueller, an intrepid journalist who wrote a scandalously revealing book on the subject, 70% of the extra virgin olive oil sold is adulterated — cut with cheaper oils. Apparently, the mob’s been at it so long, that even most so-called “experts” can’t tell a real olive oil from a fake olive oil based on taste alone....
The most common form of adulteration comes from mixing extra virgin olive oil with cheaper, lower-grade oils. Sometimes, it’s an oil from an altogether different source — like canola oil or colza oil. Other times, they blend extra virgin olive oil with a poorer quality olive oil. The blended oil is then chemically deodorized, colored, and possibly even flavored and sold as “extra-virgin” oil to a producer. In other words, if you find a major brand name olive oil is fake, it probably isn’t the brand’s fault. Rather, it’s their supplier’s.
Mueller’s book is deeply engaging, reading like a typical suspense novel or crime drama rather than a news story. His engrossing way with words sucks you in from page one and doesn’t let you go until you reach the back cover....
HOW CAN YOU TELL IF YOUR OIL’S FAKE?
So, if you can’t go by taste alone, how can you tell?First, extra-virgin olive oil ought to be comprised of mostly monounsaturated fat that grows more solid when cold. If you put a real extra-virgin olive oil in the refrigerator, it ought to become thick and cloudy as it cools completely (some oils made from high-wax olive varieties will even solidify). It should be noted, however, that this is not a fail-proof test. That’s because adulterated oils may also become thick and cloudy in the refrigerator. After all, some adulterated extra-virgin olive oils are cut with low-grade, refined olive oil. Those would still clump up. Other adulterated extra-virgin olive oils are cut with just enough of the cheaper oils that they’ll still be mostly olive oil, so they’ll have some clumping, too. If, however, the oil you put in the fridge fails to thicken at all (still appearing as clear and runny as it did at room temperature), then you know something certain: that it’s fake!
Second, extra-virgin olive oil ought to be flammable enough to keep an oil lamp burning. Again, this isn’t a fail-proof test, and for the same reasons. But, it is certain that if your so-called “extra virgin olive oil” doesn’t keep a wick burning, it isn’t extra-virgin at all, but instead contains refined oils.
Since no completely fail-proof test exists, here’s what I do to know I’m getting a good oil: I know my farmer. He’s not a mobster; he’s a friend. And his farm has been growing and producing high-quality, fully authentic olive oils for more than a hundred years.
Artisan and locally-produced olive oils (the variety you can find from domestic small family farms) have always passed every single test of authenticity. So, buy locally. Buy from a farmer you can get to know and trust, and you’ll be set."
See the entire article @ Food Renegade