5 Mistakes You Should Never Make When Buying Olive Oil

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Not Checking the Best By/Pressing Date

Unlike wine and cheese, olive oil does not get better with age. In fact, you should use up your bottle of olive oil within a month of opening—it starts to go bad the moment the seal is broken and the oil is exposed to oxygen. To make sure that your oil is still at peak taste when you buy it, check for a "best by" or "pressing" date. The pressing date should be less than a year ago to guarantee the flavor of the olive oil.