Burhaniye Olive Oil: two thousand years attested by the Adramytteion excavations

In geographical indications the phrase “produced here for centuries” appears often and is rarely evidenced. Burhaniye Olive Oil's certificate rests on excavation finds: work at the ancient city of Adramytteion attests two thousand years of olive growing in the area.

The record

The raw material

The Ayvalık cultivar averages 3.6 g per fruit; the fruit is medium-sized, rounded and close to cylindrical. Oil content runs 18-24%. The cultivar serves both for oil and for table use.

Two harvests, two thresholds

This is where the certificate is distinctive: it gives separate sensory values for early and ripe harvest.

In early-harvest oils fruitiness, bitterness and pungency are high and acidity low. Free acidity across the range runs 0.3-0.8.

The distinction matters: two different product profiles are protected under one registration — the sharp oil of an early harvest and the mellow oil of a ripe one. We discussed the choice in is early harvest expensive or valuable.

One cultivar, four registrations

The Ayvalık cultivar alone underpins four separate geographical indications: Ayvalık Olive Oil (88), North Aegean Olive Oils (392), Burhaniye (518) and Edremit Olive Oil (273). One cultivar registered separately in different localities is the clearest demonstration that a geographical indication attaches to a place, not to a cultivar.

In short

Burhaniye Olive Oil is extra virgin oil produced from the Ayvalık cultivar in Burhaniye and Gömeç. The certificate adds two things: archaeological grounding and sensory thresholds that split by harvest timing.

The area as the document defines it

The short line in the record does not give the registration's full boundary. The document's own definition reads:

t; Balıkesir ili Burhaniye ve Gömeç ilçelerinin doğuda Madra Dağı, batıda Ege Denizi, güneyde Mayatepe’den Kerem Köye uzanan yay ile kuzeyde Dutluca Köyünden Çoruk Köyüne kadar olan yay içinde kalan alan

What the registration requires, and what producers actually do

The document binds sensory thresholds but sets no limit on the time between harvest and pressing. In the field, operators fill that gap with rules of their own.

The Burhaniye municipality runs its own grove and set out its working figures in its 2023 harvest announcement:

⚠ Those 24 hours are the municipality's own practice, not a requirement of the registration. But the comparison is instructive: the Edremit Zeytinyağı registration immediately to the north binds the same interval at 10 hours. The same cultivar, two neighbouring districts, one writing it into the document and the other leaving it to operating practice.

Why does the interval matter? While harvested fruit waits, enzyme activity and fermentation raise free fatty acidity. The Burhaniye document's free acidity range of 0.3-0.8 is a band that cannot be held without that discipline.

The daily 3,500 kg gives another measure: about 58 kg per person per day for a crew of 60. That is the realistic pace of hand and pole harvesting, and it is where the yield gap between harvest methods comes from.

Its place in Balıkesir's olive production

85% of Balıkesir's fruit goes to oil. An oil-based registration for Burhaniye therefore matches the province's production structure exactly — the mirror image of Bursa's table-weighted profile.

At 27.7 kg per tree the yield is above the national average, indicating a mature olive-growing region in both tree stock and husbandry.