Why Giresun? Origin, Tombul and What It Means for Buyers

“Giresun quality” is the most-used phrase in the hazelnut trade and the least-examined. It is worth knowing what the province actually contributes, what the Tombul variety contributes, and which of the two your specification is really buying.

Where Giresun sits in the world crop

Türkiye is the world’s largest hazelnut producer. The International Nut and Dried Fruit Council puts the country at 66% of global production on an average crop of roughly 715,000 tonnes in-shell across the 2012/13–2021/22 period, with the eastern Black Sea region — Ordu, Giresun, Samsun and Trabzon — carrying 73% of the bearing area.

So Giresun is not a boutique origin. It is a core part of the largest producing region in the world’s largest producing country, which is precisely why the name travels and why it gets attached to product that never grew there.

What the province actually contributes

Three things, and none of them are marketing:

• Steep, north-facing slopes above the Black Sea. Orchards sit on gradients that rule out most mechanised harvesting. The nuts come in by hand, which is slower and more expensive — and which also means the ground-contact fraction can be managed rather than scooped up with everything else.
• A narrow, humid maritime climate band. Mild winters, no summer drought, consistent rainfall. Hazelnuts are shallow-rooted and unforgiving of water stress; this climate removes that variable.
• Old plantings. Much of the area is long-established orchard on smallholdings rather than recent conversion. Mature bushes on a known site behave predictably year to year.

Together these produce the characteristics the trade associates with the name: a round kernel, a pellicle that releases cleanly on roasting, and a high fat content that carries flavour into paste and praline.

Tombul: the variety, not the place

Tombul — “round” in Turkish — is the variety most associated with Giresun, and it is where most of the kernel behaviour a processor cares about actually comes from. Variety governs kernel shape and roundness, pellicle adhesion and therefore blanching yield, how evenly the kernel takes a roast, and fat content.

Province governs growing conditions: climate, slope, soil, harvest method. It does not, on its own, tell you what the kernel will do on your line.

The practical rule follows directly: name both. A specification that says “Giresun origin, Tombul variety, 13–15 mm, Extra Class” is a specification. One that says “Giresun quality” is an adjective, and an adjective is not enforceable at arbitration.

What a buyer gains from a single origin

Most hazelnut kernel on the market is aggregated — collected from many smallholdings, pooled, graded and sold as a blend. That is a legitimate and efficient model, and for many applications it is the right one. What it cannot give you is a traceable answer to “where did this lot come from”.

Single-origin matters in three specific situations:

1. When something goes wrong. A moisture or aflatoxin problem in a traceable lot can be isolated to a harvest block and a drying batch. In a blend it can only be isolated to a season.
2. When consistency is the product. Whole-nut confectionery, premium retail packs and recipe-critical pastes all depend on the kernel behaving the same way batch after batch. One origin and one season is the cheapest way to get that.
3. When you have to answer for your supply chain. Retail and B2B customers increasingly ask where the crop was grown and under what conditions. “Türkiye” is an answer; a named orchard is a better one.

Buying the name without buying the product

Because the name carries a premium, it gets used loosely. Four questions separate the two:

1. Is the origin stated in the contract, or only in the brochure? If it is not a contractual term, it is not a term.
2. Is the variety named separately from the province? A supplier who treats them as one thing has told you something.
3. Can the supplier trace a lot back to a specific block and drying batch? Not to a region — to a block.
4. Does the certificate of analysis carry numbers? Moisture and aflatoxin as figures, not a “complies” statement. See the aflatoxin and EU limits guide for what those figures have to clear.

What this means for our lots

Everything we ship begins in our own orchards in Giresun and moves through our own processing — so the answer to “which block” exists, and the calibre spread you receive reflects one origin and one season rather than a pooled average. That is the whole reason the model is worth the extra cost of hand harvesting on a slope. How the crop is grown is on our orchards, and the control sequence it passes through on quality assurance.

The specification still does the work: the calibre and grading guide covers sizing and defect classes, the product forms guide covers raw, roasted, blanched and milled, and the harvest calendar covers when the crop is actually available.

Tell us the product, the volume, the destination and the crop year, and we will quote against it — request a quote, or browse all products.

Production shares and regional bearing-area figures cited from the International Nut and Dried Fruit Council industry profile of Turkish hazelnuts (April 2022). Crop sizes vary year to year.

Related reading

• Packaging and container loading for hazelnut exports
• Aflatoxin and the EU limits every hazelnut importer should check