Pinhão de Alcácer do Sal: Portugal's Best-Kept Secret

There is a Portuguese product that once fetched 120 euros per kilogram, which is exported to Italy and Spain as a premium raw material, which navigators carried aboard the caravels of the Age of Discovery because of its long shelf life, and which most Portuguese people never associate with the region where it is produced. The Alcácer do Sal pine nut is, probably, the best-kept secret of the Portuguese economy.

They call it “white gold.” They call it “the caviar of the forest.” And yet, when one thinks of Alcácer do Sal, one thinks of the castle, the Sado River, and its proximity to Comporta. Rarely does one think of the world’s most expensive nut, which grows in the pine forests surrounding the city.

This article is an attempt to correct that injustice.

More than half of Portugal's pine nuts come from Alcácer do Sal

The figures speak for themselves. According to a study by the Association of Forest Producers of the Sado Valley (ANSUB), more than 50% of Portugal’s pine nut production is concentrated in the municipalities of Alcácer do Sal and Grândola. Portugal has approximately 78,000 hectares of stone pine, and more than 60% of these trees are located in the Alcácer do Sal region.

We are not talking about marginal production. The four municipalities along the Alentejo coast, Grândola, Alcácer do Sal, Santiago do Cacém, and Sines, account for 45% of the entire national area of stone pine. And it is around Alcácer do Sal that, historically, the quality of the pine nuts is superior, according to the processors themselves. The proximity to the sea creates climatic conditions that reduce the impact of pests and favor seed development.

In fact, the municipality of Alcácer do Sal is home to the largest expanse of stone pine forest in Europe. This forest of stone pines, which stretches across thousands of hectares and is visible from the national highway and the villages in the interior of the municipality, forms the ecological foundation of the entire local economy.

A fruit that once sold for 120 euros per kilogram

The pine nut isn't just any old nut. It's the most expensive nut in the world.

Prices have fluctuated significantly over the years. In 2013, domestic pine nuts reached record prices of 100 to 120 euros per kilogram. In 2020, the most common peak price in production markets stood at €68.7/kg, according to the Agricultural Market Information System (SIMA). In 2023, prices stabilized at around €50/kg.

To put this into perspective: a kilogram of almonds costs about €8–12. A kilogram of walnuts costs €6–10. Pine nuts are worth five to ten times as much. And Portuguese pine nuts from the stone pine, Pinus pinea, are considered the highest quality in the world, superior to Asian pine nuts (from species such as Pinus koraiensis from Korea or Pinus gerardiana from Pakistan) in flavor, texture, and nutritional composition.

In fact, there is an application for Protected Designation of Origin (PDO) status for Alcácer do Sal pine nuts, promoted by UNAC (Mediterranean Forest Union), which would formally recognize the uniqueness and superior quality of this specific product.

From pinecone to plate: a process that hasn't changed all that much

The pine nut is the seed found inside the cones of the stone pine. Although the harvesting process is now partially mechanized, it retains an artisanal essence that dates back centuries.

The harvesting season runs from December 1 to March 31. Harvesters climb the pine trees, often using primitive tools that have changed little over the generations, and pick the pinecones by hand. Each tree bears pinecones of three different ages at the same time, which requires experience to select those that are ready.

After harvesting, the pinecones are placed in the sun on drying beds to open naturally, or forced to open in ovens using dry heat or steam. They are then shaken to release the pine nuts in their shells, which are then cracked by hand or mechanically and separated from the shells using sieves. The kernels are washed, dried in hot-air ovens (often fueled by the combustion of the pine nut shells and pinecones themselves), passed through electronic sorters to ensure uniformity of color, and finally undergo manual sorting.

This process is registered by the Directorate-General for Agriculture and Rural Development as the production method for Alcácer do Sal pine nuts, a product recognized as a Traditional Portuguese Product.

One fact that illustrates the product’s rarity: on average, three pinecones weigh one kilogram and yield only about 40 grams of pine nuts. The average yield from a pinecone is 2.1 to 2.5%, meaning that for every 100 kilograms of harvested pinecones, just over 2 kilograms of kernels are obtained. It’s easy to see why they call it white gold.

The paradox: Portugal produces the best, but hardly eats any of it

Herein lies the great paradox of the Alcácer do Sal pine nut. About 95% of domestic production is destined for export. The main buyers are Italy and Spain, which purchase the pine nuts in their shells, process them in their own factories, and then sell them as Italian or Spanish products. Portuguese pine nuts lose visibility in the international market and are absorbed as anonymous raw material.

Worse still: Portugal ends up importing pine nuts from Spain that, in many cases, are of Chinese, Turkish, or Pakistani origin, sourced from different pine species and of inferior quality. Portuguese consumers buy pine nuts at the supermarket that may not be Portuguese, while the best pine nuts in the world leave the country in their shells.

It’s a story that plays out with other Portuguese products (cork, olive oil, bulk wine), but in the case of pine nuts, it’s particularly painful: the product is expensive, scarce, and of world-class quality, yet almost no one in Portugal knows that the capital of this “white gold” is Alcácer do Sal.

Pine Nut Cookies and Sweets: The Gastronomic Legacy of the Pine Nut

While pine nut production may go unnoticed by the rest of the country, local cuisine keeps the connection to the pine nut alive. In Alcácer do Sal, the pine nut is a key ingredient in traditional sweets and in many savory dishes.

Pinhoadas are the most iconic sweet: a mixture of pine nuts, honey, and sugar, molded into traditional shapes, found in the city’s bakeries and grocery stores. The recipe is an old one, passed down from generation to generation, and every confectioner has her own variation.

But pine nuts also appear in salads, meat dishes, lamb stuffings, and even in contemporary desserts that local chefs have been developing. Purslane soup with pine nuts, Alentejo-style açorda topped with toasted pine nuts, and rice pudding with pine nuts are examples of how this nut permeates the entire cuisine of the municipality.

The tradition, in fact, predates the Age of Discovery. Portuguese navigators carried pine nuts on their overseas voyages due to their long shelf life and high energy content, a compact, nutritious, and durable food that sustained crews during months at sea.

The Threats: Pests, Competition, and Invisibility

The future of the Alcácer do Sal pine nut is not assured. There are three serious threats.

The first is biological. The western pine seed bug (Leptoglossus occidentalis), known as the pine cone sucker, has caused significant damage in recent years, reducing pine cone yields and affecting seed quality. The pest, native to North America, arrived in Portugal at the beginning of the 21st century and has spread rapidly. Other pests are expected, and the effects of climate change, longer droughts and extreme temperatures, exacerbate the vulnerability of pine forests.

The second challenge is economic. Competition from pine nuts of different species, imported from China, Pakistan, Russia, and Korea, drives prices down and confuses consumers. Often sold simply as “pine nuts” without specifying the species, these products are significantly cheaper but also of inferior quality. The absence of an approved PDO makes it difficult to differentiate products in the market.

The third reason is cultural. As traditional pastry chefs grow older and these recipes fall out of use, the pinhão loses its local culinary context. Without the pinhoadas, without the family recipes, without the food festivals, the pinhão becomes merely a commodity and loses the history that makes it unique.

What could change: the pine nut as a premium product of the Alentejo region

If Comporta is a luxury destination, if Alentejo wine is internationally renowned, and if Alentejo olive oil has conquered the world, why can’t the pine nuts from Alcácer do Sal follow the same path?

All the conditions are in place. The product is scarce and of world-class quality. The region is experiencing an unprecedented cycle of investment and visibility. An application for PDO status is already underway. And there is an extraordinary story to tell, from Europe’s largest lowland pine forest to the “white gold” that sustained sailors and now fuels Mediterranean haute cuisine.

What is missing is, perhaps, what has been missing for centuries: someone to look at Alcácer do Sal and see, beyond the castle and the river, the wealth that quietly springs from its pine forests. The Alcácer do Sal pine nut does not need to be invented. It needs to be revealed.

Where to try pine nuts in Alcácer do Sal

Visitors to Alcácer do Sal can enjoy pine nuts in a variety of ways. The bakeries and grocery stores in the historic center sell pinhoadas and other traditional sweets made with pine nuts. Restaurants such as Estrela do Sado and A Escola feature pine nut dishes on their menus. Mercearia Alcázar, on the south bank of the river, offers regional products that include local pine nuts.

At Mansão do Passeio, a business and cultural hub housed in a historic building on Rua 5 de Outubro, networking events and cultural workshops often feature tastings of local products, with pine nuts being a regular feature. The space, which is home to more than 10 companies in fields such as tourism, consulting, and technology, also serves as a hub connecting those who want to experience the best the region has to offer with those who produce it.

For those who want to take pine nuts home, the most authentic option is to buy them directly from local producers at the town’s markets and fairs. The Alcácer do Sal Municipal Market, currently undergoing renovation by the city council, is traditionally one of the most popular places to buy them.

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About Mansão do Passeio

Mansão do Passeio is a prestigious corporate headquarters in the Alentejo region, a historic early 20th-century building in Alcácer do Sal that offers virtual offices with a tax address starting at €35/month, private offices, meeting rooms, and event space. It is home to companies that have chosen to be at the heart of the region that produces the world’s finest pine nuts.