Dried fish and island cooking.

A dry island larder

The kitchen of Formentera began with limits. The island is small, low and dry, fresh water is scarce, wind is constant, and the sea is never far away. Those conditions shaped a larder that relied on what could be kept: salt, oil, dried vegetables, cheese and fish cured to last beyond the week when boats stayed in or the catch was poor. Storage was a practical form of weather sense. It is a kitchen shaped by shortage and by patience.

The result is a cuisine that tastes of preservation: salty, sharp, oily and slow. It is not built on abundance. A handful of cured fish can season a broad salad, a pot of rice or a plate of tomatoes. The cooking is plain, but the balance is precise. Salt carries flavour when there is little fresh meat, and oil carries richness when the garden is thin. On Formentera, that logic still holds. That is the logic behind peix sec as well.

What peix sec is

Peix sec means dried fish. The fish is cleaned, salted and laid out in the air, usually under a light cover to keep insects off, until it loses most of its water and becomes firm and dark. The salt draws moisture out and the wind finishes the work. The method needs no fridge and little fuel. It needs patience, dry weather and a place where the air can move freely. The fish is usually small or cut into pieces, not a whole large fillet.

The name is plain, and so is the product. It is not the same as smoked fish or salt cod, though the family resemblance is clear. Peix sec is drier, tougher and more concentrated, and it is used as an ingredient rather than a fillet. It keeps for months in a dry cupboard, which is why it belongs to the older story of the island. A little goes a long way in the pot. That is why it appears in small amounts, cut fine and spread through the dish.

• SaltSalt draws water from the fish and helps it keep without refrigeration.
• AirDry wind finishes the curing and gives the fish its firm texture.
• TimeCuring takes days rather than hours, and the weather decides the pace.
• StorageKeep it dry and cool, and use it as a seasoning rather than a main portion.

Salt, sun and wind

The island's curing tradition sits inside a wider landscape of salt. The lagoons at the centre of Formentera have been worked for salt, and the same dry air that helps the pans helps the fish. Wind is not background weather here. It dries washing, moves sand, shapes dunes and decides whether a day's work can be done outside. Curing is simply one more use of those conditions, worked into the household calendar. The salt pans and the fish racks are part of the same working landscape.

Salt also appears at the table. It is used to cure, to preserve and to lift the flavour of tomatoes, greens and fish. The salt pans and the fish rack belong to the same economy: a dry island makes salt, and salt makes keeping possible. That link is easy to miss when the fish arrives already packed, but it explains why the island's cooking is so direct. It is a kitchen built on two common things, salt and air. That is the plainest explanation of the island's taste.

How it reaches the table

Peix sec is rarely served as it is. It is soaked, rinsed or briefly boiled to soften it and to pull out some of the salt, then shredded or cut into small pieces. From there it can go into a salad with tomato, onion, olives and oil, or into a rice dish, a stew or a plate of vegetables. The aim is seasoning, not bulk. A small piece can carry a whole dish. The soaking water is discarded, and the fish is tasted before more salt goes in.

The salads of Formentera are a good example. They are not delicate. They use what keeps and what grows: tomatoes, onions, peppers, olives, capers, oil and vinegar, with dried fish adding depth. The fish gives the salad a savoury edge that anchovy or tuna might give elsewhere. It also makes a light meal feel substantial. This is cooking from a place where the shop is far, the boat is weather-dependent and the cupboard has to work. The result is a salad that is both light and filling.

• Soak firstSoak or rinse the fish before use, then taste before adding more salt.
• Small piecesShred it finely so it seasons the dish rather than dominating it.
• SaladsTomato, onion, olives and oil make a plain base for a little dried fish.
• Rice and stewsAdd it early to rice or slow pots so the flavour spreads through the liquid.

The garden behind the wall

Formentera's gardens are small and defended. Stone walls break the wind, keep sand out and hold a little moisture in thin soil. Fig trees, vines, tomatoes, onions, peppers and herbs grow where there is shelter. The kitchen depends on these plots as much as on the sea. Dried fish is the store-cupboard partner to a garden that produces in bursts, and the two together make a full plate on the table. A wall, a fig tree and a water butt can make a small garden productive.

The dry island also has a sweet side, though it is not the subject here: figs, grapes, melons and almonds appear when they are ready. The savoury kitchen uses oil generously, because oil carries flavour and keeps. Bread, tomatoes, salt and oil can be a meal. Add a little dried fish and the same meal gains depth. This is not a cuisine of many ingredients. It is a cuisine of good keeping and careful use. The sweet and savoury sides of the island are not separate worlds.

Fish in its season

Fish is not a year-round certainty. Weather decides whether boats go out, and the catch changes through the year. A dried store makes sense in that setting: it covers the empty days and the rough weeks. The modern visitor sees a full market in summer and may not notice the logic behind the old habit. The habit is not nostalgia. It is a buffer, and it shaped the taste for salt and depth in island food. That is the practical history behind a food that looks simple.

Today peix sec is not only a household staple. It appears on menus that look back to local cooking, and it is sold in markets and shops as a traditional product. That revival is welcome, but it should not turn a practical food into a costume. The best versions are still made with care, in dry weather, and used in the same modest way. Ask how it was cured if you are curious; the answer is usually about weather and timing. A good cure is judged by smell, texture and the weather that made it.

A kitchen of few things

The cooking of Formentera is often described as Mediterranean, but the local version is narrower and more practical. It depends on oil, salt, fish, vegetables and bread, with meat in a smaller role. Herbs and wild greens add variation. The sea provides, the garden provides, and the cupboard fills the gaps. That triangle is the whole cuisine, and it is more interesting than a long menu. It rewards repetition rather than novelty. It is a cuisine that repeats because repetition works.

The point is not austerity for its own sake. It is a way of cooking that makes the most of a small, dry place with a long coast and a short growing season. A tomato in summer needs only salt and oil. A piece of dried fish needs only soaking and a little patience. Bread needs only tomatoes and oil. These are not compromises. They are the dishes the island is known for, and they are best eaten without decoration. That is the whole argument, and it needs no decoration.

That triangle is the whole cuisine, and it is more interesting than a long menu.

Eat with the island

A visitor can enjoy this food without turning it into a performance. Order a salad with peix sec, try a rice dish, and notice how little the fish needs to do. Drink water or a local wine, and leave room for fruit. The cooking is at its best when it is not stretched. It is a modest table, and that is the point. The island does not need a grand cuisine; it needs one that fits. A long lunch is part of the cooking, not a delay to it.

There are practical ways to eat well here. Buy fish from a market or shop that can tell you where it comes from. Choose local vegetables when they are in season. Carry a water bottle and refill it rather than buying plastic. Sit down for lunch rather than eating on the move. None of this is solemn. It is simply how a small island keeps its food culture alive and its summer manageable. These habits cost little and make a real difference.

• Buy in seasonFish and vegetables are better when they are caught or picked at the right time.
• Ask questionsA shop or market stall can say how the fish was cured and where it came from.
• Use lessA small piece of peix sec seasons a dish; more will overwhelm it.
• Sit downA proper lunch suits the island better than food eaten in a hurry.