Cold Pressing Explained — What It Means, Why It Matters and How to Verify It

Cold pressing is the method by which the highest quality extra virgin olive oil is extracted. The term appears on countless labels. It is understood by relatively few consumers. And it is one of the most important factors separating genuinely exceptional olive oil from the industrial product that fills most supermarket shelves.

Understanding what cold pressing actually means — and what happens when it is not done correctly — changes how you read an olive oil label permanently.

What Cold Pressing Actually Means

Cold pressing refers to the extraction of oil from olives at temperatures that do not exceed 27°C (80°F) at any point in the process. The term "cold" does not mean the olives are chilled — it means they are never heated. No external heat is applied to increase the yield of oil from the olive paste. The extraction happens at the natural ambient temperature of the pressing environment, carefully controlled to remain below that critical threshold.

The significance of that temperature limit is chemical. Olive oil contains hundreds of volatile aromatic compounds, polyphenols and antioxidants that are directly responsible for its flavour, its colour and its nutritional properties. Heat destroys them. Above 27°C, these compounds begin to degrade — the fruity aromas disappear, the complexity flattens, the polyphenol content drops, and the oil becomes something closer to a cooking fat than a premium ingredient.

Cold pressing preserves them. Every compound that made the olive exceptional on the tree remains in the oil.

Cold Pressing vs Industrial Extraction

Most commercially produced olive oil is not cold pressed. Industrial extraction applies heat — sometimes significant heat — to the olive paste to increase the volume of oil extracted per tonne of olives. More oil per olive means lower cost per litre. It also means a product with a fraction of the aromatic complexity, polyphenol content and flavour character of cold pressed oil.

This is why two bottles of extra virgin olive oil can sit side by side on a shelf at very different prices. The label may say extra virgin on both. The extraction method — and what it does to the contents — is the difference between them.

Cold Pressed Industrial Extracted
Temperature below 27°C throughout Heat applied to increase oil yield
Polyphenols and antioxidants preserved Heat-sensitive compounds degraded
Complex aroma and flavour profile Flat, neutral flavour
Lower yield per tonne of olives Higher yield per tonne of olives
Higher production cost Lower production cost
Shorter shelf life — freshness is quality Longer shelf life through processing

The Four-Hour Window

Cold pressing is not only about temperature. It is about time.

The moment an olive is separated from the tree, its chemistry begins to change. Oxidation starts. Enzymes in the olive begin breaking down the very compounds that make the oil exceptional. Every hour between harvest and press is an hour of degradation.

The standard in premium olive oil production is to press within 24 hours of harvest. LAVERDE ARTISAN operates on a four-hour maximum. From the moment the Biancolilla olives are picked on the estate in Caltanissetta, Sicily, to the moment they enter the press, four hours is the limit that is never exceeded.

This is not a marketing claim. It is a production constraint that the brand imposes on itself — because beyond four hours, the oil is measurably different. Not dramatically. Measurably. And at the level of quality LAVERDE is committed to, measurable matters.

Altitude and Temperature — Why 900 Metres Changes the Equation

The estate in Caltanissetta, Sicily, sits at 900 metres above sea level. This altitude is not incidental to the quality of the cold pressing — it is integral to it.

At 900 metres, the ambient temperature during harvest season in November is significantly lower than at sea level. This means the olives arrive at the press already cool, in conditions naturally suited to cold extraction. The temperature differential between day and night at altitude also concentrates the polyphenol content of the olive before it is ever pressed — meaning the starting material for cold pressing is already richer in the compounds that cold pressing works to preserve.

Cold pressing at altitude is not the same as cold pressing at sea level. The oil knows the difference.

How to Verify Cold Pressing on a Label

The phrase "cold pressed" or "cold extracted" on a label is regulated under EU and UK food law. For extra virgin olive oil, it means extraction temperature did not exceed 27°C. However, the regulation applies to the claim — the label can legally say cold pressed while still using borderline temperatures that compromise quality.

The reliable signals of genuinely cold pressed oil go beyond the label claim:

  • Harvest date stated — producers proud of their cold pressing want you to know how fresh it is
  • Low acidity — genuine cold pressing results in low oleic acid content, typically below 0.5%
  • Rich colour — green-gold with visible depth, not pale yellow
  • Complex aroma — you should smell the olive, the grass, the fruit before you taste anything
  • Named origin and cultivar — producers who cold press properly are proud of every detail

Cold Pressing at LAVERDE ARTISAN

LAVERDE ARTISAN is present at the cold pressing in Sicily every November. The process is supervised directly — not delegated, not reported on after the fact. The four-hour rule is enforced on the ground. The temperature is controlled throughout. Each shipment is subsequently cleared by Italian authorities, including provenance and purity verification at source.

The result is a Biancolilla extra virgin olive oil that carries everything the olive contained on the tree — its aroma, its polyphenols, its flavour — intact, into the bottle, and from there into your kitchen.

That is what cold pressing is for. That is what it delivers, when it is done properly.


Explore further:
What is Biancolilla Olive Oil?  ·  What is Single-Estate Olive Oil?  ·  Sicilian Single-Estate Farming  ·  What is LAVERDE ARTISAN?  ·  Shop Cold-Pressed Sicilian EVOO