P
Spanish · Basque Country
Kokotxas al pil-pil
The most refined expression of Basque pil-pil technique. Kokotxas are the gelatinous chin flaps cut from just below the salt cod's jaw — approximately 30-40g per fish — and represent the richest concentration of collagen in the animal. Their extreme gelatin content means the pil-pil sauce forms faster than with regular bacalao but also breaks more easily under heat. This is a dish of extreme economy and extreme luxury simultaneously: the least fashionable cut of the least fashionable fish, elevated through technique into one of the Basque Country's defining preparations. Properly executed, the sauce is simultaneously firm and molten, with a trembling quality that reveals its gelatin structure.
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I
The Market List
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500 g
salt cod kokotxas
desalted; or fresh hake kokotxas, lightly salted before cooking
Not yet stocked in British Columbia
250 ml
good olive oil
generous ratio to kokotxas
Your own market
4 cloves
garlic
thinly sliced
Your own market
1 small
dried guindilla or mild dried chilli
Not yet stocked in British Columbia
splash
dry white wine
added early; aids emulsion stability
Not yet stocked in British Columbia
II
The Method
1
If using salt cod kokotxas, desalt them under cold running water and soak in several changes of cold water for 24–48 hours according to their thickness. Pat completely dry before cooking. If using fresh hake kokotxas, salt them lightly and allow to rest briefly before proceeding. The kokotxas must be dry on their surface — any surface moisture will interfere with emulsification.
2
Set a wide earthenware cazuela over the lowest possible heat. Add the olive oil, sliced garlic, and guindilla. Warm slowly until the garlic is soft and barely golden and the oil is fragrant but has not begun to smoke. Remove the garlic and chilli and reserve. The oil must be warm and infused, not hot.
3
Lower the desalted kokotxas into the warm oil, skin side up. Add the small splash of dry white wine. Maintain the temperature strictly between 60 and 70°C — well below a simmer. At no point should the oil bubble vigorously. This is where the dish lives or dies: too much heat turns the collagen rubbery and the emulsion will not form; the correct low temperature coaxes the gelatin from the kokotxas into the oil as a silky, trembling sauce.
4
Begin the circular motion of the cazuela — gripping it by the handles and rotating it in slow, continuous circles — as the kokotxas release their gelatin into the oil. Maintain this patient motion for 20–30 minutes without interruption. Do not crowd the cazuela; the kokotxas must have space for the emulsion to build around each piece. The sauce is ready when it coats the kokotxas in an opaque, cream-coloured emulsion that moves as one body when the pan is tilted.
5
Return the reserved garlic and guindilla to the cazuela. Do not add salt — the kokotxas retain sufficient salinity from the cure even after desalting. Serve immediately in the cazuela or on warmed plates. The finished dish should tremble visibly when the plate is moved; a sauce that has set rigid has been allowed to cool, and one that pools like water has broken.
III
Quality Hierarchy
01
Reserve — Fresh kokotxas from live merluza (hake), available seasonally in Basque markets; considered by many superior to salt cod kokotxas for their cleaner gelatin and delicate salinity. Cooked the same day they are cut.
02
Estate — Salt cod kokotxas from a single named artisanal bacalao producer, cut precisely from below the jaw at 30–40 g per fish, desalted with care over 48 hours in cold water changed repeatedly.
03
Market — Good-quality salt cod kokotxas from a reliable fishmonger or specialist importer, properly labelled and of consistent thickness, desalted fully before use.
04
House — Pre-packaged desalted kokotxas where available; the dish is achievable but the collagen content and texture may be less pronounced than with freshly desalted product.
IV
Sensory Tests
◇Touch. Kokotxa surfaces are completely dry before entering the oil — no moisture film on the skin.
◇Sight. Oil temperature holds without visible bubbling; a single small bubble rising occasionally is the upper limit.
◇Sight. The emulsion is opaque, cream-coloured, and moves as a single trembling body when the cazuela is tilted — neither watery nor set solid.
◇Touch. The finished plate trembles visibly when moved; this reveals the gelatin structure of a properly formed pil-pil.
◇Where it lives or dies. Temperature must be held at 60–70°C throughout — below this the gelatin will not release; above it the collagen turns rubbery and the emulsion cannot form.
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VI
What to Pour
The pairing
Fortified wine
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