Extra virgin olive oil is one of the healthiest foods in your pantry — but only while it's fresh. Here's how to pick a good one, keep it at its best, and cook with it confidently.
Picture a familiar kitchen. A pretty bottle of olive oil sits right beside the stove, catching the afternoon sun from the window. It's handy, it looks lovely, and it's been open for months.
Here's the catch: that oil is quietly losing the very things that made it worth buying. Extra virgin olive oil isn't a forever food. It's a fresh one — and most of us treat it like it will last forever.
Why it's worth getting right.
Extra virgin olive oil (EVOO) is the least processed grade of olive oil: olives crushed and pressed, with no chemical refining. That gentle process keeps its polyphenols — natural plant compounds that do a lot of the heavy lifting for your health.
What a good extra virgin olive oil does for you
Most of these benefits come from its polyphenols, which fade as the oil ages
Heart health
In the large PREDIMED trial, a Mediterranean diet with extra virgin olive oil cut heart attacks, strokes and heart-related deaths by around 30% compared with a lower-fat diet.
Protects cholesterol
Its polyphenols help protect LDL cholesterol from oxidative damage, one of the early steps in clogged arteries.
Calms inflammation
Oleocanthal, the compound behind that peppery kick, has natural anti-inflammatory activity.
The good fats
Around three-quarters of its fat is monounsaturated oleic acid, the heart-friendly kind.
Unlocks your veggies
A drizzle helps your body absorb vitamins A, E and K and antioxidants like beta-carotene and lycopene.
Vitamin E
A natural source of vitamin E, an antioxidant that helps protect your cells.
Taste test: a fresh, good-quality oil often leaves a peppery tickle at the back of your throat. That's the polyphenols talking.
The key point: those polyphenols fade with time, light, heat and air. A stale bottle still gives you fat and kilojoules, but far less of the goodness.
How to choose a good one.
You don't need to be an expert. Just read the bottle for four things.
Read the bottle like a nutritionist
Four things worth checking before it goes in your trolley
The name
✓ "Extra Virgin Olive Oil"
✕ "Pure", "light" or plain "olive oil"
Harvest date
✓ Harvested: 2025/26
✕ Only "Best before: 2028"
Where it was grown
✓ Names the country where the olives were grown
✕ Only says where it was "packed" or "bottled"
Packaging
✓ Dark glass bottle or tin
✕ Clear bottle under bright shop lights
Not on the list: colour and price. Neither is a reliable sign of quality.
A harvest date is the most underrated detail on the label. 'Harvested 2025/26' tells you far more than 'Best before 2028', because olive oil doesn't improve with age like wine. No harvest date? Don't rule it out, but a dated oil tells you more.
And two things to ignore: colour and price. A vivid green oil isn't automatically better than a golden one; colour depends on the olive variety and ripeness. And an expensive bottle that has sat in a warm, bright shop for two years can be a worse buy than a fresh, well-packaged everyday oil. Many countries also have quality seals or certification programs for extra virgin olive oil, which are worth looking for where you live.
It's not one flavour.
Like wine or coffee, extra virgin olive oil tastes different depending on the olive variety, where it's grown and when it's harvested. Oils from early-harvest, greener olives tend to be bolder, more bitter and more peppery, and usually richer in polyphenols. Later harvests from riper olives are softer and more buttery. Neither is wrong. Many kitchens keep a gentle one for everyday cooking and a bold one for drizzling.
Find your flavour
Extra virgin olive oils range from mild to bold. Match the oil to the dish.
Mild & delicate
Buttery, soft and gentle. Usually from riper olives.
Try it with: Baking, eggs, fish, homemade mayo, delicate salad leaves
Medium & fruity
Fresh-cut grass, green apple, herbs. A little bitterness and pepper.
Try it with: Everyday cooking, salads, roasted vegetables, pasta
Robust & bold
Grassy, bitter and peppery. Often early-harvest oils, richest in polyphenols.
Try it with: Drizzling over soups, dal, beans, grilled vegetables, bread dipping
Bitter and peppery are good signs. If it smells like crayons, putty or stale nuts, it's rancid. Musty, muddy or vinegary means it's faulty.
How to store it.
Light
Sunny benches, windowsills, clear bottles
Heat
Next to the cooktop, oven or a hot shelf
Oxygen
Every time the cap is off
Time
It's a fresh food, not a forever food
Light + Heat + Oxygen, over Time = oxidation
Stale flavour and fewer of the polyphenols you paid for
Where does your bottle live?
The golden rule: cool, dark and closed
✓ Keep it here
✓Pantry
✓Kitchen cupboard away from the stove
✓Dark food-storage cupboard
✕ Not here
✕Beside the cooktop
✕On a sunny kitchen bench
✕Near the oven
✕On the windowsill
✕A hot pantry shelf
The fridge? Not needed for everyday oil. It can turn cloudy or partly solid, which is harmless but inconvenient.
Once it's open, every pour lets a little more air in. Close the cap straight after pouring, and buy a size you'll finish within a couple of months. A giant tin is only a bargain if you use it before it goes stale.
How to use it (yes, you can cook with it).
Extra virgin olive oil isn't just for salads. Use it raw over salads, roasted vegetables, hummus, lentils, dal and grain bowls — and cook with it too, for sautéing, eggs, roasting, curries and pan-frying.
Myth: you can't cook with extra virgin olive oil. Reality: it's perfectly suited to everyday home cooking. The only rule is don't heat it until it smokes.
Raw & drizzling
Dressings, dips, dal, grain bowls
✓ Ideal
Gentle sauté
Onions, greens, eggs
✓ Great
Everyday cooking
Roasting, curries, pan-frying
✓ Fine
Smoking
Haze rising from the pan
✕ Too hot
If the oil is smoking, turn the heat down. That's your signal, not a reason to stop cooking with it.
Three ways people waste it.
Saving the 'good bottle' for a special occasion. That gifted bottle isn't a trophy. Every month it sits in the cupboard, it's quietly fading. Open it and enjoy it this week.
Deep-frying in large volumes. Filling a pot with your best oil is costly, and long, hot frying breaks down the compounds you bought it for. Save your best oil for dishes where you'll taste it.
Heating oil in an empty pan and walking away. It's the fastest way to hit smoking point. Heat the pan and oil together over medium heat, then add your food.
The bottom line.
Extra virgin olive oil is a simple everyday food, but how you choose, store and use it matters. Look beyond the price and packaging claims, pay attention to freshness, protect the oil from light and heat, and use it regularly rather than saving the “good bottle” for later.
Written by Pratha
Nationally Recognised Nutrition Practitioner (Australia) — HWC, SNC
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