What makes good organic olive oil? A guide for connoisseurs.

Not all olive oils are created equal – this becomes clear at the latest when comparing a supermarket product with a high-quality, traditionally produced organic olive oil. But how can you actually recognize the quality? And what factors determine whether an olive oil is worth its price?

The olive variety: The foundation of quality

The choice of olive variety is crucial for the taste, shelf life, and health benefits of the oil. While there are over 1,000 different olive varieties worldwide, some have established themselves as being of particularly high quality:

The Spanish Picual from Andalusia impresses with its robust, slightly bitter flavor and high heat resistance, while the also Spanish Arbequina yields a particularly mild, sweetish oil with almond and apple notes. From Italy come the Tuscan Frantoio with its balanced, fruity character and notes of artichoke, and the Apulian Coratina , which produces one of the most polyphenol-rich and intense oils in the world.

We squeeze from the Koroneiki olive. This variety is Often referred to as the "Queen of Olive Oils" in Greece, this olive is undoubtedly among the very best. This small but powerful olive thrives particularly well on the steep slopes of the Peloponnese and Crete . What makes it so special? Its exceptionally high content of oleic acid and polyphenols – both substances that benefit not only the flavor but also the health.

The oil extracted from Koroneiki olives is characterized by a mild, fruity aroma reminiscent of freshly cut grass and green almonds. Its high concentration of antioxidants makes it exceptionally long-lasting and has been proven to support cardiovascular health.

The right harvest time: Timing is everything.

Freshness is crucial for olive oil. The olive harvest typically extends from September to March, with the exact timing having a decisive influence on the character and quality of the oil.

Early harvest (September to November):

• More intense, peppery aroma
• Higher polyphenol content
• Greener color
• Lower yield, but higher quality

Late harvest (December to March):

• Milder, buttery flavor
• Higher oil yield
• Golden color
• Fewer polyphenols

The art lies in recognizing the optimal moment – ​​a skill possessed only by experienced olive growers who have known their trees for generations.

Harvesting method: manual vs. machine

The way olives are harvested has a direct impact on the quality of the resulting oil.

Hand-picked harvest – The top class

The hand-picked olive harvest This is the most traditional and gentle method. The olives are harvested undamaged from the tree – either entirely by hand or with rakes and modern electric combs that facilitate the work without damaging the fruit.

The advantage: Damaged olives begin to oxidize immediately, which reduces the quality of the oil. Hand-picked olives remain intact and can develop their full aromatic potential.

The challenge: This method is time-consuming and labor-intensive, especially during the rainy season between September and March, when the harvest takes place. But it is precisely this meticulous care that makes the difference between good and excellent olive oil.

The pressing process: Cold pressing as the gold standard

After the harvest, a race against time begins. Because the faster the olives are processed, the better the result.

Cold pressing – gentle processing through temperature control

The Cold pressing process This is one of the highest quality methods for producing olive oil. The olives are mechanically pressed directly after harvesting – ideally within a few hours – at temperatures below 27°C.

This gentle processing preserves:

• The natural flavors
• The valuable nutrients
• The characteristic flavor notes
• The high antioxidant content
• The unsaturated fatty acids

The low temperature guarantees that no heat-related changes or losses of the essential components occur. This makes the oil particularly rich in health-promoting substances.

The quality parameters: Numbers that count

Anyone who really wants to know what they're buying should take a look at the analytical values. These laboratory parameters provide objective information about the quality of an olive oil:

Acidity

The acidity level indicates the proportion of free fatty acids and is an important indicator of the freshness and quality of olive oil. EU regulations stipulate a maximum acidity level of 0.8% for extra virgin olive oil. Premium oils often have significantly lower levels – a sign of particularly gentle processing and fresh olives.

Peroxide value

The peroxide value (maximum 25 mEqO₂/kg for extra virgin olive oil) measures the primary oxidation level of the oil. It indicates how much the oil has already been affected by oxygen, light, or heat. The lower this value, the fresher and better protected the oil was.

UV absorption (K232, K270, ΔK)

These three values ​​are often cryptic to laypeople, but crucial for experts:

• K232 (max. 2.5): Indicator for primary oxidation products
• K270 (max. 0.22): Indicates secondary oxidation processes and possible refining
• ΔK (max. 0.01): Precise indicator for adulteration or mixing with refined oils

Wax content

The wax content (max. 150 mg/kg) provides information about the purity of the oil and is particularly low in oils from the first cold pressing.

Organic certification: More than just a label

An organic label guarantees that:

• No synthetic pesticides were used.
• No chemical fertilizers were used.
• Biodiversity is promoted
• Sustainable farming methods are practiced

This is particularly important with olive oil, which we often consume raw.

Storage and shelf life: How to preserve quality

Even the best olive oil loses its quality if stored improperly. The three main enemies are:

• Light (prefer dark bottles)
• warmth (Store in a cool place, but not in the refrigerator)
• oxygen (Close the bottle tightly after use)

A high-quality olive oil, especially from polyphenol-rich varieties such as Koroneiki, can retain its quality for 18-24 months if stored correctly.

Conclusion: Quality has its price – and its value

Good organic olive oil is the result of meticulous care at every stage: from selecting the right variety and harvesting at the optimal time, to gentle hand-harvesting and controlled cold pressing. The analytical results objectively confirm what the nose and palate already perceive: Here, work was carried out with respect for nature and the product.

Anyone who has ever experienced the difference between industrially produced and artisanally produced organic olive oil will understand: it's not just about taste. It's about tradition, health, and the appreciation of a product that has shaped Mediterranean culture for millennia.

Do you have any further questions about the quality of our olive oil or would you like to learn more about traditional production methods? Contact us or leave us a comment!