Only 19 growers and four and a half hectares produce the certified Gernika pepper, and almost none of it grows in Gernika. The protected zone covers all of Bizkaia and Gipuzkoa plus ten municipalities of Álava.
Do Gernika peppers actually come from Gernika? Rarely. The protected zone is defined by climate, not by town: any Atlantic-climate area of the Basque Country with real evapotranspiration above 585 millimetres. That covers Bizkaia and Gipuzkoa entirely plus ten Álava municipalities, and packing must happen inside the same zone.
Pimiento de Gernika, or Gernikako Piperra, is a Protected Geographical Indication covering a green pepper of the local Gernika variety, picked unripe for frying.
A tiny crop, and a name worth stealing
The Basque Government’s reason for the seal is blunt: the pepper’s fame has encouraged fraudulent use of its name. The certification exists to make the real thing provable rather than to decorate a crate.
The scale explains why. In the last documented season, 19 growers worked four and a half hectares and sold 361,870 dozens, of which more than half reached the quality needed for the Eusko Label mark. That is more than 180,000 certified dozens, around 2.1 million peppers.
Certified fruit travels a short, fixed route to the shelf:
- Picked manually and in stages, with as many passes through the crop as it takes to take each fruit at its own moment
- Boxed on the same day it is picked, into two-dozen packs of 24 peppers
- Sealed so the pack cannot be opened undetected, while still letting the buyer see the fruit inside
- Marked with Eusko Label, which is the part a shopper can actually check
Certification sits with HAZI Fundazioa, based at Torre Muntsaratz in Abadiño, Bizkaia, accredited under UNE-EN 45011 with number 07/C-PR030 and reachable on 94 603 03 30.
It is the same foundation that audits txakoli wineries, as set out in the guide to txakoli from Bizkaia, and that accredits the cider chain described in the guide to the Basque cider house season. One body, three certifications.
In Bilbao the certified pepper turns up in specialist shops and on market stalls, whose real hours are in the guide to Bilbao’s municipal markets. Only two of the six open in the afternoon in August, so a summer pepper run is a morning errand.
Reading the size rule
Every certified pepper has to fall inside a narrow set of measurements, and they are checked before packing rather than after.
Length without the stalk runs 6 to 9 centimetres, width 2 to 3 centimetres, weight 10 to 12 grams. Flesh is 2 to 3 millimetres thick, the cross-section shows two or three faint locules, the tip is pointed and the stalk fine and long.
Tolerances are fixed too: minor quality defects and size deviations may not exceed 10% by count in any packed batch.
| Parameter | Rulebook value |
|---|---|
| Length without stalk | 6 to 9 centimetres |
| Width | 2 to 3 centimetres |
| Weight | 10 to 12 grams |
| Flesh thickness | 2 to 3 millimetres |
| Locules | 2 or 3, faintly marked |
| Defect and size tolerance | 10% per batch |
Why it does not burn your mouth
Anyone who has played roulette with padrón peppers will want this detail. The Gernika pepper is classed as a sweet pepper with no capsaicin or a low content according to the Pimiento de Gernika rulebook, which adds that under Basque environmental conditions it does not normally turn hot.
Thin flesh helps: at 2 to 3 millimetres it fries fast and avoids the leathery skin that develops when a pepper is left to ripen first. That is also why the harvest rule insists on picking before the fruit reaches its final size, while the colour is still even.
The Gernika variety type is also known as pimiento choricero and pimiento de Bizkaia, and sits close to the sweet Italian or cristal type. The differences are measurable: harder skin when ripe and thinner flesh, 3 millimetres against the 4 of the sweet Italian. Within the local variety, two selected lines are entered in the commercial varieties register, named Derio and Iker.
The zone is a rainfall figure
The rulebook does not list towns. It defines the production area as Atlantic-climate zones of the Basque Country with real evapotranspiration above 585 millimetres, a climate factor with direct bearing on the fruit.
That threshold matches the provinces of Gipuzkoa and Bizkaia in full, plus two parts of Álava: the Cantabrian Álava zone, covering Ayala, Okondo, Llodio, Amurrio and Artziniega, and the Gorbea foothills, covering Urkabustaiz, Zuya, Zigoitia, Legutiano and Aramaio.
Packing and conditioning must happen inside the same zone, so the fruit cannot leave the area to be boxed and come back. What the name marks is a variety type and a climate band, not a town.
Gernika-Lumo does supply the name and the historic market, and the town itself is covered in the guide to a Gernika day trip, reached in 61 minutes on the E4 line described in the guide to the Bilbao to Mundaka and Bermeo train.
When to look for them
Two calendars apply, depending on where the plant grows, and both are in the rulebook.
Outdoors, planting takes two months, April and May, and picking starts from June. Under glass it moves three months earlier, to February, March and April, with a possible second cycle from June, and there picking starts in mid April, about 8 weeks sooner.
| System | Planting | First harvest |
|---|---|---|
| Open air | April and May, 2 months | From June |
| Greenhouse | February to April, 3 months | Mid April |
| Greenhouse, second cycle | From June | By cycle |
Taken together, harvest runs mainly across the eight months from April to November. The commercial window narrows to six months, May to October, according to the Basque Government, so a pepper found outside those months is rarely in season.
Planting density reaches up to four plants per square metre, and the rulebook recommends covering the soil with polythene sheeting against weeds.
Buying them well
- After the certificate → a two-dozen pack with the Eusko Label mark
- Checking the size → 6 to 9 centimetres, stalk excluded
- Worried about heat → the rulebook calls it sweet, with little or no capsaicin
- Looking for the season → May to October in the market
- Judging the colour → even mid to dark green
- Unsure of the origin → Bizkaia, Gipuzkoa and ten Álava municipalities
Frequently asked questions about Gernika peppers
Do Gernika peppers come from Gernika?
Rarely. The protected zone is every Atlantic-climate area of the Basque Country with real evapotranspiration above 585 millimetres, which covers all of Bizkaia and Gipuzkoa plus ten municipalities of Álava. Gernika-Lumo is one town inside it.
Are Gernika peppers spicy?
Usually not. The rulebook defines them as sweet peppers with no capsaicin or a low content, and states that under Basque environmental conditions they do not normally turn hot. The flesh is 2 to 3 millimetres thick and the skin is fine.
How big is a Gernika pepper meant to be?
Between 6 and 9 centimetres long without the stalk, 2 to 3 centimetres wide and 10 to 12 grams in weight. It is picked green, before full ripeness and before reaching its final size, with an even mid to dark green colour.
When are Gernika peppers in season?
Harvest runs mainly from April to November under the rulebook, while the Basque Government puts the commercial season at six months, May to October. Outdoor planting happens in April and May, greenhouse planting from February.
What does the Eusko Label pack guarantee?
That the peppers meet the rulebook and were grown inside the protected zone. They reach the market in sealed two-dozen packs boxed on the day of picking, certified by HAZI Fundazioa under accreditation number 07/C-PR030.
Are Gernika peppers the same as padrón peppers?
No. Gernika peppers belong to the local Gernika variety type, also called pimiento choricero, and their rulebook classes them as sweet with little or no capsaicin. Padrón peppers come from Galicia and are a different variety with a different reputation for heat.
A pepper named after one town and protected across two provinces needed a seal to prove which it was.