Extra virgin olive oil is alive with flavour, but it is also sensitive.
That is part of what makes it so special. A good oil carries the character of a harvest, a place, a producer and a moment in time. But unlike wine, olive oil does not improve with age. It is at its best when fresh, well kept and used with pleasure.
In summer, storage matters even more.
Longer days, warmer kitchens and bottles left near windows or hobs can all affect the quality of an oil. The change is not always dramatic at first. It may simply taste flatter, softer or less aromatic. But over time, light, heat and oxygen can take away the very qualities that made the oil worth choosing in the first place.
Keep olive oil away from light
Light is one of olive oil’s quiet enemies.
This is why many high-quality oils are packaged in dark glass bottles or tins. The aim is not only aesthetic. It is practical. Dark packaging helps protect the oil from light exposure and supports better freshness over time.
At home, the same principle applies. Keep your bottle in a cupboard or pantry rather than on a sunny worktop.
It may look beautiful beside the cooker, but it will last better somewhere darker.
Keep olive oil away from heat
A warm kitchen can be a difficult place for olive oil.
The most common mistake is storing a bottle next to the hob, oven or a sunny window. These are convenient places, but not ideal ones. Heat can accelerate the loss of aroma and freshness.
Choose a cool cupboard instead. Not the fridge, as this can cause the oil to cloud and change texture, but a steady, cool place away from direct warmth.
If you are using olive oil every day, keep a smaller bottle within reach and store larger tins or backup bottles somewhere cooler.
Keep the cap closed
Oxygen also affects olive oil.
Every time a bottle is opened, a little air enters. That is normal and unavoidable, but it means the way you use the bottle matters. Put the cap back on properly after pouring. Avoid leaving the bottle open while cooking or serving.
This sounds simple, but small habits make a difference.
A good extra virgin olive oil deserves the same care you would give to coffee, spices or wine once opened.
Buy the right size for your kitchen
One of the easiest ways to enjoy olive oil at its best is to buy a size you will actually use.
A large tin can be excellent value if you cook often, but less useful if it sits open for months. A smaller bottle may make more sense if you mainly use olive oil for finishing, salads or tasting.
Freshness is part of quality. It is better to open a bottle, enjoy it properly and move on to the next harvest than to keep one bottle lingering at the back of the cupboard.
Use summer as a reason to open the bottle
The best way to protect olive oil is not only to store it well. It is to use it.
Pour it over tomatoes. Finish grilled fish. Dress beans with herbs and lemon. Add it to warm potatoes, courgettes or roasted peppers. Taste it with bread before dinner.
A good bottle should not feel too precious to open. It should become part of the rhythm of your kitchen.
How to tell if olive oil has lost freshness
Trust your senses.
Fresh olive oil should smell clean and alive. Depending on the variety, it may remind you of grass, herbs, tomato leaf, artichoke, almond or green fruit. It may taste fruity, bitter or peppery.
If it smells waxy, stale, greasy or like old nuts, it may be past its best. If it tastes flat and tired, it probably is.
This is another reason to taste olive oil on its own from time to time. The more familiar you become with freshness, the easier it is to recognise when it has faded.
My thoughts
Summer cooking is one of the great pleasures of the year, but it asks a little more care from olive oil.
Keep it away from light. Keep it away from heat. Close the cap. Buy the right size. Use it while it is still expressive.
A good extra virgin olive oil is not a museum piece. It is a seasonal ingredient, made to be opened, poured and enjoyed.
About the authorNick Ednie is the founder and curator of The Olive Library, a personal journey into the world of high-quality extra virgin olive oil. With a deep love of food, Nick travels the Mediterranean to discover and share some of the finest olive oils available. He has also deepened his expertise through study at the prestigious EVOO School. Nick’s mission is to champion heritage, quality and education in every bottle he selects and to bring the stories behind exceptional producers to life. When he’s not tasting and sourcing oils, he writes about flavour, terroir and the art of olive oil appreciation.