Olive oil is a fresh product. From the moment it is bottled, its aroma slowly fades. Good storage will not stop time, but it can keep the oil tasting the way the producer intended for much longer.
Key takeaways
- Protect olive oil from light, heat and air.
- Store it in a cool, dark cupboard — not next to the stove or on a sunny windowsill.
- Close the cap tightly after every use.
- Use an opened bottle within a few months for the best flavour.
The three enemies: light, heat and air
Light speeds up oxidation, which is why quality oils are sold in dark glass bottles or tins. Heat accelerates the same processes; a cool cupboard is ideal. Air is the third factor: every time the bottle is opened, oxygen comes in.
Choosing the right container
Dark glass, stainless steel and food-grade tins are the best options. Avoid clear plastic for long-term storage and avoid reactive metals such as copper or iron. If you buy in large tins, decant a small amount into a dark bottle for daily use and keep the tin closed and cool.
Where to keep it in the kitchen
A closed cupboard away from the oven, hob and dishwasher is best. The refrigerator is not necessary; cold temperatures can make olive oil cloudy or partly solid. This is harmless and disappears at room temperature.
How long does olive oil last?
Always check the best-before date on the label. Once opened, the oil is at its best within a few months. Buying a size you will use reasonably quickly is better than keeping a large bottle open for a long time.
Signs that olive oil has gone off
Rancid oil smells and tastes like crayons, putty or old nuts, and loses its fresh, fruity notes. It is not harmful in small amounts, but it will spoil the taste of food.
Frequently asked questions
Why has my olive oil turned cloudy?
Low temperatures can cause natural waxes and fats to solidify. Leave the bottle at room temperature and it will become clear again; quality is not affected.
Should olive oil be kept in the fridge?
It is not necessary. A cool, dark cupboard is enough, and refrigeration makes the oil harder to pour.
Does olive oil improve with age like wine?
No. Olive oil is at its best when fresh and gradually loses aroma over time.
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