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作者oversky.
你是對的。不過就連結裏其它段的說明，我不覺得美國的橄欖油有好到那。
While less than 10% of world olive oil production meets the criteria for labeling as extra-virgin, it has been estimated that up to 50% of retail oil is labeled "extra-virgin". Some oil labeled "extra-virgin" is diluted with cheaper olive oils or other vegetable oils.
In the first week of March 2010, researchers at the University of California at Davis' Olive Center purchased three bottles each of 14 imported olive oils and five California oils at retail stores in three different regions of California (Sacramento County, San Francisco Bay Area, and Los Angeles County). All of the oils were labeled "extra-virgin olive oil." Samples were shi...
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