"More than two-thirds of common brands of extra-virgin olive oil found in California grocery stores aren't what they claim to be, according to a report by researchers at UC Davis, " said the Los Angeles Times in the story linked to below.
Scroll down to page 10 of the UC-Davis report here for the chart of the various brands.
http://olivecenter.ucdavis.edu/news-events/news/files/olive%20oil%20final%20071410%20.pdf
The tests to determine extra-vrigin oil (acidity, peroxide level, etc.) are listed and described.
"Lab tests cast doubt on olive oil's virginity"
Los Angeles Times
http://articles.latimes.com/2010/jul/15/business/la-fi-olive-oil-20100715
Found to have be fraudulently labeled as Extra-Virgin [often adulterated and mixed with cheaper non-olive oils]:
Whole Foods
Rachel Ray
Safeway
Newman's Own
Colavita
Bertolli
Filippo Berio
Pompeian
Star
Carapelli
Mezzetta
Mazzola
Found to be accurately labeled as Extra-Virgin:
Kirkland Organic
Corto Olive
California Olive Ranch
McEvoy Ranch Organic
Scroll down to page 10 of the UC-Davis report here for the chart of the various brands.
http://olivecenter.ucdavis.edu/news-events/news/files/olive%20oil%20final%20071410%20.pdf
The tests to determine extra-vrigin oil (acidity, peroxide level, etc.) are listed and described.
"Lab tests cast doubt on olive oil's virginity"
Los Angeles Times
http://articles.latimes.com/2010/jul/15/business/la-fi-olive-oil-20100715
Found to have be fraudulently labeled as Extra-Virgin [often adulterated and mixed with cheaper non-olive oils]:
Whole Foods
Rachel Ray
Safeway
Newman's Own
Colavita
Bertolli
Filippo Berio
Pompeian
Star
Carapelli
Mezzetta
Mazzola
Found to be accurately labeled as Extra-Virgin:
Kirkland Organic
Corto Olive
California Olive Ranch
McEvoy Ranch Organic
