Great olive oil does not begin in the bottle. It begins at the tree.
From the moment an olive is picked, every decision — harvest timing, handling, extraction — shapes the character of the oil that follows.
Understanding this process is the first step to recognising real extra virgin olive oil.
What Does “Extra Virgin” Really Mean?
“Extra virgin” is not a marketing term.
It is a legal classification for olive oil, defined by strict chemical and sensory standards.
To carry this name, an olive oil must:
- be mechanically extracted
- contain no chemical refining
- remain below 0.8% acidity
But numbers alone do not define quality.
A true extra virgin olive oil should feel fresh, vibrant and expressive.
The aroma should be alive, the flavour structured, and the finish clean.
That vitality is what separates authentic extra virgin olive oil from ordinary blends.
What Is Acidity in Olive Oil?
Acidity measures the amount of free fatty acids present in the oil.
These acids form when olives are damaged, overripe, or left too long before processing. As the fruit begins to break down, its cellular structure releases fatty acids into the oil.
Despite its name, acidity is not something you taste.
Instead, it is a laboratory measurement that indicates how carefully the olives were handled before extraction.
Lower acidity usually reflects:
- healthy, undamaged fruit
- fast processing after harvest
- careful extraction conditions
Higher acidity often suggests the opposite.
Early Harvest vs Peak Harvest
Olives are living fruit, and their chemistry changes as they ripen.
The timing of the harvest influences everything that follows — from aroma and flavour to the nutritional composition of the oil.
Two harvest stages are most common.
The Green Olive
Early harvest olives are picked while they are still green and firm.
At this stage the fruit contains its highest concentration of polyphenols — natural compounds responsible for the bitterness and peppery finish found in vibrant olive oils.
Among the most studied polyphenols are:
- Oleocanthal, associated with natural anti-inflammatory properties
- Oleacein, known for its antioxidant strength
Early harvest oils typically produce lower yields, but the result is often an oil with greater intensity, freshness and nutritional value.
The Red and Purple Olive
As olives continue to ripen, their colour gradually shifts from green to red and deep purple.
During this stage, polyphenol levels slowly decrease while the oil becomes rounder and softer in flavour.
These oils often show a smoother profile while still containing high levels of oleic acid, a monounsaturated fat widely associated with cardiovascular health.
A different profile – not a lesser one.
How Olive Oil Is Made
From Tree to Bottle
The journey from olive to oil is surprisingly simple, yet every step requires precision.
Harvest
Olives are carefully picked to avoid bruising, which can quickly affect oil quality.
Crushing
The olives — including their pits — are crushed into a paste that releases the oil stored within the fruit cells.
Malaxation
The paste is slowly mixed so tiny oil droplets can combine and separate naturally.
Extraction
Finally, a centrifuge separates oil from water and olive solids.
When this process is performed at temperatures below 27°C, it is known as cold extraction, helping preserve aroma, polyphenols and delicate flavour compounds.
Why Spain Produces So Much Olive Oil
Spain produces nearly half of the world’s olive oil, but the reason goes far beyond scale.
Southern Spain offers one of the most ideal environments for olive cultivation.
The region combines:
- long, dry summers
- mild winters
- mineral-rich soils
- centuries of agricultural knowledge
Together, these conditions have made Andalusia one of the most important olive-growing landscapes on earth.
Scale brought Spain to the top.
Craft is what keeps it there.
How Many Olives Are Needed for One Liter of Oil?
Producing olive oil requires far more fruit than most people expect.
On average, 4–5 kilograms of olives are needed to produce one liter of extra virgin olive oil.
For early harvest oils — where olives are picked while still green — the yield is even lower.
In those cases it can take 7–10 kilograms of olives to produce a single liter of oil.
A mature olive tree produces roughly 15–40 kilograms of olives per year, meaning one tree may yield only a few liters of oil per season.
This is one of the reasons real high-quality olive oil can never be cheap.
Olive oil is alive. And like all living products, time, light and air slowly change it.
Understanding how olive oil reacts to light, heat and oxygen is the key to preserving its flavour, aroma and nutritional value.
Why Some Olive Oil Comes in Dark Glass
Light is one of the biggest enemies of fresh olive oil.
Exposure to light accelerates oxidation, a natural process that gradually softens flavour and diminishes the oil’s aromatic character. For this reason, many high-quality extra virgin olive oils are bottled in dark glass, which protects the oil from direct light exposure.
Lusholio stores its pure extra virgin olive oils in dark glass for exactly this reason.
Our Experience Collection uses transparent bottles intentionally. The visible herbs and ingredients are part of the experience. When stored away from direct light and heat, the oil maintains its quality and character.
How to Store Extra Virgin Olive Oil
Proper storage helps preserve the natural structure of olive oil.
To maintain freshness:
- store olive oil in a cool, dark place
- keep it away from direct sunlight
- avoid storing it near heat sources such as stoves
After each use, close the bottle carefully. Oxygen slowly interacts with the oil over time and gradually softens its flavour profile.
When protected well, extra virgin olive oil retains its balance, aroma and character.
Can Olive Oil Go Bad?
Extra virgin olive oil is naturally shelf-stable, but it is not immune to time.
As a fresh agricultural product, it contains delicate aromatic compounds and antioxidants that slowly change when exposed to oxygen, heat and light.
This natural process is called oxidation.
When stored correctly and enjoyed within a reasonable period, olive oil retains its structure and flavour. When neglected, its vibrant character slowly fades.
Freshness is not a marketing term.
It is part of the experience.
How Long Does Olive Oil Last?
Most high-quality extra virgin olive oils are best enjoyed within 12 to 18 months after harvest.
While olive oil does not spoil in the same way as fresh food, its flavour and aromatic complexity gradually diminish over time.
This is why the harvest date is often a better indicator of freshness than the best-before date.
How to Recognise Rancid Olive Oil
When olive oil oxidises, its aroma changes noticeably.
Instead of fresh green notes, it may smell like:
- old nuts
- crayons
- cardboard
These aromas are natural signs that the oil has passed its peak freshness.
Extra virgin olive oil is not only for finishing dishes — it is one of the most versatile cooking fats in the kitchen.
Used correctly, it performs beautifully both in cooking and in finishing meals.
Can You Cook with Extra Virgin Olive Oil?
Yes.
High-quality extra virgin olive oil typically has a smoke point between 190°C and 210°C, making it suitable for most everyday cooking methods.
This includes:
- sautéing
- roasting
- baking
- finishing dishes
Its stability comes from its composition, which includes monounsaturated fats and antioxidant compounds.
To preserve flavour, avoid heating an empty pan for too long before adding the oil.
How Olive Oil Compares to Other Cooking Oils
Extra virgin olive oil has a unique nutritional composition.
It naturally contains:
- oleic acid, a monounsaturated fat
- polyphenols, natural antioxidants
- vitamin E
These compounds are closely associated with the traditional Mediterranean dietary pattern, one of the most widely studied dietary patterns in the world.
No single ingredient defines a healthy lifestyle, but extra virgin olive oil has long been valued as part of a balanced approach to food.
Your Content Goes HereGreat olive oil is not meant to taste neutral.
Learning to recognise fruitiness, bitterness and pepperiness allows you to understand the true character of extra virgin olive oil.
The Three Indicators of Quality
Professional olive oil tasters evaluate oils using three key sensory attributes.
These traditional Italian terms are widely used in olive oil tasting:
- Fruttato — fruitiness
- Amaro — bitterness
- Piccante — pepperiness
These characteristics are not defects. They are signs of a fresh and expressive oil.
Fruttato — Fruitiness
Fruitiness refers to the aromatic character of the olive itself.
Early harvest oils often show green, grassy or herbaceous aromas, while later harvest oils may reveal softer notes such as almond or ripe fruit.
Whatever the profile, the aroma should feel clean, fresh and immediate.
Amaro — Bitterness
A gentle bitterness on the palate is a natural sign of polyphenols, the compounds responsible for many of olive oil’s nutritional properties.
As olive oil ages or oxidises, this bitterness gradually fades — along with much of the oil’s character.
Piccante — Pepperiness
The warmth at the back of the throat is one of the most telling signs of fresh olive oil.
This sensation comes from oleocanthal, a natural compound studied for its anti-inflammatory properties.
In many cases, a stronger peppery finish indicates higher polyphenol content.
Understanding Polyphenols
Polyphenols are natural compounds found in olives.
They act as antioxidants, helping protect the oil from oxidation and contributing to its flavour profile.
Research has linked high-polyphenol olive oils to several potential benefits, including:
anti-inflammatory effects
cardiovascular support
cellular protection
How to Taste Olive Oil
Tasting olive oil is surprisingly simple.
Pour a small amount into a glass and warm it slightly in your hands. Smell the aroma, then take a small sip and let the oil spread across the palate.
Notice:
- the fruitiness on the nose
- the bitterness on the tongue
- the peppery sensation in the throat
Together these sensations reveal the oil’s character.
High-Polyphenol Olive Oil
Polyphenols are natural compounds that olives produce to protect themselves from sunlight and oxidation.
When we extract olive oil from the fruit, these compounds remain in the oil — giving it both its flavour and many of its health properties.
Two of the most studied polyphenols are:
Oleocanthal – responsible for the peppery sensation in the throat and known for its natural anti-inflammatory properties.
Oleacein – a powerful antioxidant linked to cardiovascular health.
The European Union even allows an official health claim for olive oils with high polyphenol levels:
“Olive oil polyphenols contribute to the protection of blood lipids from oxidative stress.”
Not every bottle labelled “olive oil” contains the same product.
Understanding the difference between extra virgin, refined and blended oils helps consumers make informed choices.
Extra Virgin vs Refined Olive Oil
Extra virgin olive oil is mechanically extracted from fresh olives.
It undergoes no chemical refining and must meet strict sensory and chemical standards.
Refined olive oil, by contrast, begins as lower-grade oil that undergoes additional processing to remove flavour, colour and aroma.
While this creates a neutral oil with longer shelf stability, many of the natural compounds found in extra virgin olive oil are lost.
What Labels Don’t Always Say
In many supermarkets, bottles labelled:
- “pure olive oil”
- “light olive oil”
contain refined oil blended with a small amount of extra virgin olive oil.
The added extra virgin oil restores some colour and aroma, but the nutritional profile remains closer to refined oil.
Understanding labels helps consumers recognise these differences.
Harvest Date vs Best Before
A best-before date does not reveal when the olives were harvested.
The harvest date tells you when the oil was actually produced and is often a clearer indicator of freshness.
Our Approach
At Lusholio we believe transparency should be simple.
Every batch carries a harvest date.
Every bottle is traceable to its origin.
We share this information openly because quality should never need to hide.
Transparency builds trust — and trust begins with knowing what is in the bottle.
What Happens to Low-Quality Olive Oil?
Some olive oils begin as fruit that is too damaged or poorly stored to produce extra virgin oil.
This oil is called lampante oil — historically used only for oil lamps.
To make it edible, the oil undergoes a refining process involving:
- chemical neutralisation
- bleaching
- high-temperature deodorisation
These steps remove flavour, colour and aroma — but also destroy most of the natural antioxidants found in real extra virgin olive oil.
A small amount of extra virgin olive oil is often blended back into the refined oil to restore colour and aroma.