Because of EVOO’s high monounsaturated fat content, it can be stored longer than most other oils, as long as it’s done properly. When choosing your storage location, remember that heat, air, time, and light are the enemies of olive oil. Store extra virgin olive oil in a dark, cool cupboard away from the stove and other heat-producing appliances. Refrigerated olive oils will solidify and turn cloudy. Return them to room temperature to restore their fluidity and color.
The best storage containers for olive oil are made of tinted glass to help keep out light, porcelain and stainless steel are also acceptable. Containers should have a tight cap or lid to keep out unwanted air. Olive oil should never be stored in reactive metals, and we recommend staying away from plastic containers, as well.
It isn't recommended. When refrigerated, most extra virgin olive oils become cloudy and thick. While this doesn't harm the oil per se, as with wine, extended refrigeration can result in diminished aromas and muted flavors, even after the oil warms back to room temperature.
It’s a question of quality—dark glass protects the oil from the deteriorating effects of light. This is also why many health products come in brown bottles, wine is bottled in dark green glass, and clear, glass milk bottles have been replaced with opaque cartons.
Even a few weeks of light exposure will accelerate the aging of olive oil. To slow this process, it’s a good idea to store your oil in a dark, cool cabinet instead of on a countertop, which is likely brighter and warmer.
Balsamics’ enemies are light and heat, so cool, dark storage spaces are best. If you’re using balsamic vinegars primarily for salads and like them chilled, they can be refrigerated. If you’re using them for sauces, marinades, and reductions, store them in a cupboard. The shelf life of balsamic vinegar should be between 3-5 years.