"Best By" dates are a recommendation for the optimal period during which the oil is expected to retain its peak flavor and aroma. They serve as guidelines rather than expiration dates.
Storage conditions (temperature, light exposure, and air exposure) play a significant role in determining how long olive oil will maintain its quality. Properly stored olive oil, kept in a cool, dark place away from heat and direct sunlight, can often remain good beyond the "Best By" date.
It's essential to note that olive oil will be safe for consumption after the "Best By" date, but its flavor and aroma might deteriorate, resulting in a less enjoyable culinary experience. To ensure the best quality, use your olive oil within a reasonable timeframe, especially once the bottle is opened, as exposure to oxygen accelerates the quality decline. We suggest 3 months after opening for bottles.
Ultimately, while "Best By" dates provide useful guidance, you must examine its aroma, taste, and appearance – rather than solely relying on the printed date.