Using Extra Virgin Olive Oil
Best when Fresh
Make sure the label says extra virgin olive oil, and displays a harvest or milling date in addition to the best use date. Olive oil is best used within 24 months of the harvest date. Once opened, an olive oil is best used within 6 months, so make sure the oil is purchased well in advance of the best-used date.
Store extra virgin olive oil from light, air and heat. Use it up within 6 months once it is open. Rancidity happens when an oil has been exposed to heat or light or is simply old, so following these storage tips slows this natural process.