What Are the Different Grades of Olive Oil?

Extra virgin olive oil, virgin olive oil, olive oil and olive-pomace oil can sit beside one another on a supermarket shelf, but they are not interchangeable names for the same product.

They represent different categories with different production routes and classification requirements.

Olive-oil grades are determined by defined chemical and, for virgin olive oils, sensory requirements—not simply by the words a producer chooses for the front of a bottle.

Understanding those categories makes terms such as “pure,” “light,” “mild” and “premium” much easier to put into context.

How Is Olive Oil Classified?

Olive-oil classification begins with how the oil is produced and continues with analysis of the resulting oil.

Physicochemical analysis, laboratory measurement of characteristics such as free acidity and peroxide value, provides one part of the classification. For virgin olive oils, sensory evaluation provides another.

This means a single number cannot establish the grade.

Free acidity is one of the best-known measurements, but an oil with very low acidity is not automatically extra virgin. As explained in our guide to olive-oil acidity, acidity must be interpreted as one parameter within a larger classification system.

The International Olive Council establishes international standards and methods for olive oils and olive-pomace oils.

What Is the Difference Between Extra Virgin and Virgin Olive Oil?

Extra virgin and virgin olive oil belong to the virgin-oil route. They are obtained directly from olives using mechanical or other physical processes rather than refining.

Extra virgin olive oil, or EVOO, must satisfy the applicable chemical requirements and sensory criteria. Its free acidity cannot exceed 0.8 grams per 100 grams, and under the sensory criteria it must have fruitiness and no sensory defects.

Virgin olive oil is produced through the same basic mechanical or physical route but falls into a different classification. It may have limited sensory defects within the permitted criteria and can have free acidity up to 2 grams per 100 grams.

The distinction therefore cannot be reduced to acidity alone.

Our article What Makes Olive Oil Extra Virgin? examines the extra virgin category in more detail.

What Is Lampante Olive Oil?

Lampante is also part of the virgin olive-oil classification, but it does not meet the requirements for direct sale to consumers as extra virgin or virgin olive oil.

It may have sensory defects and/or analytical characteristics that place it outside those retail virgin categories.

Lampante is important for understanding the system because it shows where another production route begins: refining.

Rather than being sold directly as edible virgin olive oil, lampante oil can be sent for refining.

What Are Refined Olive Oil and “Olive Oil”?

Refined olive oil is obtained by refining virgin olive oils that require refining. Refining reduces or removes characteristics that prevent the original oil from being marketed directly in its virgin category and produces an oil with a more neutral sensory profile.

This creates an important acidity paradox.

Refined olive oil can have very low free acidity because refining itself reduces free acidity. A lower acidity number therefore does not automatically mean a higher olive-oil grade.

A bottle designated simply “olive oil” is something different again.

It is composed of refined olive oil blended with virgin olive oils. The virgin component contributes characteristics to the refined base.

So “olive oil” on a legal product designation should not be read as shorthand for extra virgin olive oil.

What Is Olive-Pomace Oil?

After the main mechanical extraction of olive oil, material remains from the fruit, including pulp, skin and crushed stone. This residual material is known as olive pomace.

Oil remaining in that material can be recovered through a separate industrial process, producing crude olive-pomace oil.

The crude oil is then refined to produce refined olive-pomace oil. The retail category called olive-pomace oil is produced by blending refined olive-pomace oil with virgin olive oils.

Olive-pomace oil is therefore legally and technically distinct from both extra virgin olive oil and the retail category designated simply “olive oil.”

What Are the Eight Olive Oil Categories?

The European Union classification cited in the source material recognizes eight categories of olive oils and olive-pomace oils:

Only four of these are sold directly to consumers under those category names: extra virgin olive oil, virgin olive oil, olive oil composed of refined and virgin olive oils, and olive-pomace oil.

The remaining categories are important because they explain the production chain behind the final retail products.

What Is the Simplest Way to Understand the Grades?

The system becomes easier to understand when separated into two routes.

Virgin-oil route:
Olives → mechanical or physical extraction → chemical and sensory assessment → extra virgin / virgin / lampante.

Refining route:
Lampante or other virgin oils requiring refining → refined olive oil → blended with virgin olive oils → olive oil.

Pomace route:
Olive-extraction residue → crude olive-pomace oil → refining → refined olive-pomace oil → blended with virgin olive oils → olive-pomace oil.

Those production routes explain more than marketing terms such as “premium,” “mild” or “light.” Those words should not be confused with the defined olive-oil categories.

What Does an Olive Oil Grade Actually Tell You?

A grade establishes that an oil fits the requirements of a defined category. It does not tell you everything about the oil.

Two extra virgin olive oils can both satisfy the requirements of the same category while differing substantially in cultivar, origin, harvest timing, sensory profile and chemical composition.

Likewise, numbers such as acidity or polyphenol concentration should not be converted into independent quality scores.

For example, Milan Truffle's Olive Oil 101 publishes harvest and laboratory information for its Lumìa extra virgin olive oil. Those additional data describe characteristics beyond the category name itself.

Our examination of 18 extra virgin olive oils and what their labels actually tell you applies the same principle: first identify what the label establishes, then separate it from what requires additional evidence.

Olive Oil Grades: The Bottom Line

Extra virgin, virgin, olive oil and olive-pomace oil are not different marketing names for the same liquid.

They represent different categories and, in some cases, fundamentally different production routes.

Extra virgin and virgin oils come through the virgin-oil route without refining. Lampante oil does not qualify for direct retail sale as edible virgin olive oil and can enter the refining route. Retail “olive oil” combines refined olive oil with virgin olive oils. Olive-pomace oil begins with the residual material from the primary olive-oil extraction and follows its own extraction and refining route.

Read the category first. Then use chemistry, sensory evidence, harvest information and traceability to understand what that category name alone cannot tell you.