D
Destillation
Distillation plays no role in the production of extra virgin olive oil, and this is precisely what determines its quality.
What distillation is:
- Distillation is a thermal separation process: substances are heated, evaporated and then condensed again. This involves the use of high temperatures.
Why distillation is excluded for extra virgin olive oil:
- According to EU and IOC rules, extra virgin olive oil may only be obtained by mechanical processes, cold pressing/cold extraction (max. approx. 27 °C).
What is distilled instead:
- Aromatic substances from olive leaves or press residues (for cosmetics, perfume)
In short:
- Extra virgin olive oil is produced without distillation – distillation means a loss of naturalness and quality.
Drupe
Drupe (stone fruit)
Botanically speaking, the olive is a drupe, i.e. a stone fruit.
It typically has three layers:
- Exocarp: the outer skin
- Mesocarp: the fleshy pulp (oil-rich)
- Endocarp: the hard stone (olive pit)
This classification explains why olives are more closely related to cherries or peaches than to nuts.