In late autumn the Peloponnese changes rhythm. Nets come out of storage, families drive back to the villages, and from first light the groves fill with the sound of branches being combed. For a few weeks, everything waits on the olives.
Our family has worked these groves in the Olympian region for four generations. Even after members of the family moved to New York in the early 1980s, they kept coming back each year to tend the trees. This is what the harvest looks like, and why so much of the quality in a tin is decided in a few short weeks.
When the Season Starts
In the Peloponnese, the olive harvest usually runs from late October into January, depending on the weather and the grove. Picking day is a decision, not a date on the calendar.
Pick early, while many olives are still green, and you get less oil, but it is greener, more bitter and more peppery, with more of the polyphenols that give it that bite. Wait until the fruit has turned purple and black and you get more oil, softer and rounder in flavour. Every producer chooses where to land between the two, and the choice shapes the oil for the whole year.
Pick early and you get less oil, but more of what makes it worth having.
How the Olives Come Down
Wide nets are spread on the ground under each tree. Then the branches are combed, by hand with rakes or with small handheld combs that shake the olives loose, and the fruit rains down onto the nets. The olives are gathered, leaves and twigs are picked out, and the fruit goes into sacks or ventilated crates.
It is slow, physical work, and it has barely changed in shape for generations. The Koroneiki olive is small, so a tree yields a great many olives for each litre of oil.
The Race to the Mill
From the moment an olive leaves the tree, the clock is running. A bruised olive starts to oxidise and ferment, and those flavours end up in the oil. That is why the best producers take their olives to the mill the same day, ideally within hours of picking.
From fruit to oil in one night
The olives are washed and stripped of any remaining leaves, then crushed, pits and all, into a paste. The paste is stirred slowly for twenty to forty-five minutes, a stage called malaxation, which lets tiny droplets of oil join together.
For a cold-extracted oil, the paste never goes above 27°C. A centrifuge then spins the oil away from the water and solids. Fresh from the decanter, the oil is cloudy, bright green and startlingly peppery.
We explain the 27-degree rule in full in What Cold Extracted Actually Means.
From the Mill to the Tin
The new oil rests so the sediment can settle, and it is tested. Each harvest is lab-tested for the measures that define extra virgin, and we publish the results. Then it goes into tins, which keep out the light that would otherwise start to fade it, with the harvest date printed on each one.
Late October to January: the usual harvest season in the Peloponnese.
Hours, not days: how quickly the best olives reach the mill.
27°C: the most the paste may reach for an oil to be called cold extracted.
12–18 months: how long after harvest the oil is at its best. That is why the harvest date matters.
Why It Matters to You
Almost everything that makes an extra virgin oil worth buying happens in these few weeks: the day the olives are picked, how gently they are handled, how fast they reach the mill, and how cool the mill stays. No label can add it back later.
Our family's own Olympian Cold Extraction oil is sold out until this season's harvest is in. Until then, our Gis Ergon tins come from the Adamopoulos family estate in Amaliada, also in the Peloponnese, and are picked, milled and tested with the same care.
Harvest-Dated Greek Koroneiki
Gis Ergon extra virgin, cold-extracted and lab-tested every season. Three and five litre tins, in stock now.
Harvest timing varies by year, altitude and grove. Sources: EU marketing standards for olive oil (the 27°C cold-extraction rule); International Olive Council guidance on harvesting and milling.