Keep extra-virgin olive oil away from light and heat. Avoid leaving the container on a windowsill or beside the stove: convenience while cooking can expose the oil to unfavourable conditions. [International Olive Council — conservazione dell’olio]
Close the container tightly after use and limit contact with air. Even an opaque tin should be kept away from heat. Olive oil does not improve with age: buy according to your consumption and follow the instructions on the packaging. [International Olive Council — guida per i consumatori]