Summary: Some dishes seem simple but require understanding to work. Cocochas al pil-pil is one of them. The ingredient list is very short: cod cheeks, olive oil, garlic. What makes the recipe memorable, or spectacularly fail, is what you don't see: the exact oil temperature, the correct movement of the saucepan, and the patience to let the cod gelatin do its job.
In this guide, we explain the traditional cocochas al pil-pil recipe with all the details that make a difference: ingredients, technique, common mistakes, and variations. If you've tried it before without success, or if it's your first time, this article has what you need.
Contents
Ingredients for 4 people
For the basic cocochas al pil-pil recipe:
- 600-700 g desalinated cod cheeks (or approximately 150-175 g per person)
- 200 ml extra virgin olive oil (generous, good quality)
- 4 cloves of garlic (thinly sliced)
- 1 cayenne pepper (optional, for those who like Basque spice)
- Salt (only if necessary — properly desalinated cod cheeks usually don't need it)
- Fresh parsley (for garnish, optional)
- Clay pot (most recommended) or heavy-bottomed saucepan
- Silicone spatula or wooden handle to move the pot
The desalting process: starting 48 hours in advance
If you have salted cod cheeks (the most common format), desalting begins long before cooking. Don't leave it until the last minute.
Cod cheek desalting process:- Place the cod cheeks in a large container, skin side up (salt falls by gravity)
- Cover them completely with cold water (not lukewarm)
- Put the container in the refrigerator
- Change the water every 6-8 hours
- For medium-thickness cod cheeks, they need between 36 and 48 hours
- Taste a thin piece before cooking: it should have the saltiness of a normal seasoned dish
Insufficient desalting ruins the dish. If it's still too salty when you taste it, continue soaking.
Cocochas al pil-pil recipe: step by step
Step 1: Dry the cod cheeks (important)
Remove the cod cheeks from the desalting water and dry them thoroughly with paper towels. Excessive moisture is an enemy of pil-pil: if there's too much water in the pot, the sauce won't emulsify well and will remain liquid. Let the cod cheeks rest on paper for 10-15 minutes to drain thoroughly.
Step 2: Prepare the oil with garlic
Put the oil in the clay pot over low-medium heat. Add the sliced garlic and the cayenne pepper (if using). The goal is to infuse the oil with the flavor of the garlic, not to fry them.
The garlic should brown slowly, without burning. When it's lightly golden (about 5-7 minutes over low heat), remove it with a slotted spoon and set aside. The oil will be fragrant and ready for the next step.
Oil temperature: This is the most critical point of the recipe. The oil should not smoke or boil aggressively. If you put your finger (carefully) about 5 cm from the surface and feel intense heat but no burning, you're in the correct range: approximately 70-80°C. Above 90°C, the gelatin in the cod cheeks will be destroyed, and the pil-pil will not set.
Step 3: Add the cod cheeks
With the oil at low-medium temperature and the garlic removed, add the cod cheeks skin-side up. Begin cooking.
The cod cheeks will start to release a kind of white, gelatinous foam: this is the dissolved collagen which, mixed with the oil and the movement of the pot, will form the pil-pil sauce. Do not remove it. It's exactly what you need.
Step 4: Circular motion (the key to pil-pil)
This is the step that determines whether the pil-pil turns out well or badly. With the pot over low heat, start moving it in a circular motion, as if spinning a plate. Don't bang or shake: the movement should be gentle, continuous, and circular.
What's happening: the gelatin released from the cod cheeks is being incorporated into the oil, creating an emulsion similar to mayonnaise. Gentle heat maintains the emulsion; movement stabilizes it.
Every so often (every 3-4 minutes), remove the pot from the heat and continue the circular motion off the heat. This prevents the oil from exceeding 80°C. The cod cheeks should be in the pot for 15 to 20 minutes in total.
Step 5: Check the consistency of the sauce
As cooking progresses, the sauce should thicken. If after 15 minutes the sauce is still very liquid:
- Check that the heat is low (you might have the heat too high and the gelatin has been destroyed)
- Continue moving off the heat with more insistence
- You can add a spoonful of cold water and keep moving: the change in temperature helps stabilize the emulsion
If the sauce is too thick and doesn't flow, add a few drops of cold water and stir: it will lighten.
Step 6: Add the reserved garlic and plate
When the sauce has the desired consistency (it should coat a spoon well), add the reserved golden garlic. Leave for 2 more minutes over very low heat.
Serve directly from the clay pot (it retains heat better than any plate) with chopped fresh parsley on top.
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The most common mistakes when making cocochas al pil-pil
Error 1: The oil is too hot
This is the most common mistake. If the oil boils or smokes, the gelatin in the cod cheeks coagulates instead of emulsifying. The pil-pil will be liquid and lack body. Solution: always keep the temperature low, no more than 80°C.
Error 2: Not drying the cod cheeks
If the cod cheeks are wet, the water interferes with the emulsion and the oil splatters. Drying them thoroughly before adding them is essential.
Error 3: Wrong movement
A jerky (side-to-side) motion doesn't work as well as a circular one. The circular motion creates a current that envelops the cod cheeks and emulsifies more efficiently.
Error 4: Impatience
Pil-pil is not made in 5 minutes. The emulsification process requires between 15 and 25 minutes of continuous or semi-continuous movement. If you try to rush it by increasing the heat, you destroy the gelatin.
Error 5: Poorly desalted or low-quality cod cheeks
If the raw material is not good or is poorly desalted, the result will always be disappointing. Pil-pil magnifies both the quality and the flaws of the product.
Variations of the cocochas recipe
Cocochas in green sauce
Green sauce adds parsley, garlic, fish stock, and peas to the base of the cocochas. It's a more elaborate and wetter preparation than pure pil-pil. The key is to add the parsley only at the end of cooking so that it doesn't lose its color or aroma.
Additional ingredients for green sauce:- 1 small glass of txakoli or dry white wine
- 200 ml fish stock
- Generous bunch of fresh parsley
- 1 handful of peas (can be frozen)
Cocochas with clams
The combination of cod cheeks with clams is one of the most popular preparations in Basque restaurants. Clams contribute their own gelatin and a more marine flavor that perfectly complements the cod.
Add the clams in the last 5 minutes of cooking, covered, until they open. The liquid they release integrates into the sauce, enriching it.
Cocochas a la bilbaína
A more elaborate version with choricero pepper (ñora or dried Basque pepper). The pepper adds a sweet and slightly smoky flavor. A prior sofrito is prepared with garlic, onion, and rehydrated choricero pepper, and the cocochas are added over this sofrito.
Serving and pairing tips
Serving temperature: Cocochas al pil-pil should be served very hot, freshly made. Pil-pil sauce loses texture when it cools and doesn't recover as well when reheated.
Bread: Country bread or crusty bread. The pil-pil sauce is, in part, for dipping. It's almost mandatory.
Wine: The classic pairing is txakoli (a light, slightly sparkling Basque white wine). It also works very well with an Albariño from Rías Baixas or a Manzanilla from Sanlúcar. Avoid red wines: the tannin clashes with the gelatin and makes the sauce bitter.
Garnish: Simple boiled potatoes or bread are sufficient. Don't overload the dish: cocochas al pil-pil doesn't need competition.
Frequently asked questions about cocochas al pil-pil
Why doesn't my pil-pil emulsify and remain liquid?
The most common causes are: oil that is too hot (destroys the gelatin), very moist cod cheeks (water interferes with the emulsion), or lack of continuous circular motion. Check the temperature first: it should be very low, between 60 and 80°C. If the oil has boiled, that batch of pil-pil is beyond saving.
Can pil-pil be made with hake cheeks?
Yes, although the resulting sauce has less body than with cod cheeks. Hake cheeks have less collagen, so the emulsion is lighter. The result is good but different: less unctuous and with a milder flavor.
Can I make pil-pil with cod loin instead of cheeks?
Technically, yes, cod in general has some collagen, but the loin has much less than the cheek. The resulting sauce will be lighter and less thick. Cheeks are the cut that gives the best pil-pil because they have the highest concentration of natural collagen.
How long do cocochas al pil-pil last in the fridge?
Cocochas al pil-pil last 1-2 days in the fridge, but the sauce loses texture. When reheating, do it over very low heat with gentle motion: the emulsion can be partially recovered, but it won't be the same as freshly made.
Can pil-pil be made in a Thermomix or similar?
Yes, some people do. The machine stirs at a controlled speed and temperature that can emulsify the sauce. The result is technically correct but lacks the satisfaction of the traditional method. For a first-timer or to ensure the result, it can be an option.
Can the used oil be reused later?
The oil in which the cocochas have been cooked has a lot of cod flavor and gelatin. It can be used to flavor other cod dishes (like boiled potatoes or a vegetable stir-fry with cod), but not for other neutral uses. Store it in the fridge if you don't use it right away.
What do I do if I have leftover pil-pil?
Leftovers are perfect for a pintxo: place the cocochas with their sauce on a slice of toasted country bread, sprinkle with parsley, and serve. Cold pil-pil also works mixed with pasta or as a sauce for fish rice dishes.
How much olive oil is needed exactly?
Generosity with oil is part of the recipe. For 600-700 g of cod cheeks, between 180 and 220 ml of extra virgin olive oil is usual. If you use less oil, the sauce will be too dense; if you use too much, too liquid. The approximate ratio is 30 ml of oil per 100 g of cod cheeks.
Can cocochas al pil-pil be made without a clay pot?
Yes. A heavy-bottomed saucepan (stainless steel or cast iron) works well. The clay pot is preferred because it distributes heat more gently and retains it better, making it easier to maintain a constant low temperature. In a thin metal pot, temperature control is more difficult.
How many cod cheeks per person?
As a main course, between 150 and 200 grams of desalted cod cheeks per person. If they are the only dish, aim for 200 grams. As a second course in a broader menu, 120-150 grams is sufficient.
What other dish do I combine cocochas al pil-pil with?
As a starter, a tomato salad with anchovies or garlic soup. As a side dish, simple boiled potatoes are the most traditional. Avoid strong-flavored garnishes that compete with the subtlety of the pil-pil.
Is it better to use fresh or preserved garlic?
Always fresh. Preserved garlic has a flatter flavor and sometimes adds acidity that doesn't help. Fresh, thinly sliced garlic, cooked slowly in the oil, gives the best result.
Is cayenne pepper mandatory?
No. The most classic and widespread version of pil-pil does not include cayenne pepper. It's an addition for those who enjoy a mild spice. If you're cooking for people who don't tolerate spice, omit it without issue: the recipe is still perfect.
The history of pil-pil: from humble origins to haute cuisine
Pil-pil was not born in a Michelin-starred restaurant. It was born in the kitchens of Basque fishermen and in the gastronomic societies of the Basque Country, those places where men gathered to cook and eat in an atmosphere of collaboration and experimentation.
The technique of emulsifying oil with cod gelatin was, originally, a way to make the most of an abundant ingredient that required preparation: salted cod that arrived from fishing campaigns in the North Atlantic.
Over time, from the simplicity of the technique emerged a recipe that today appears in the best Basque restaurants and has crossed borders to become one of the emblems of Spanish cuisine internationally. Great Basque chefs like Juan Mari Arzak or Martín Berasategui have reinterpreted pil-pil in haute cuisine contexts, but the homemade version, made in a clay pot with patience and generous oil, remains unsurpassed.
At Bacalalo, we have seen many seasons of cocochas come and go. If you have questions about the product or technique, our team at Mercat del Ninot in Barcelona is available to advise you.
Want to know more about cocochas? Read our complete guide on what cod cheeks are.
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