Kokotxas de Bacalao

Basque Spanish·Hard·35 min active + 10 min resting

Kokotxas are cod throats (the fatty muscle under the jaw) — a Basque delicacy cooked in a pil-pil emulsion of olive oil and cod gelatin. The result is silken, gelatinous morsels in a creamy white sauce.

Cod

Olive Oil

Garlic

Salt

Kokotxas (the fatty throat muscle of cod) are a Basque delicacy, prepared using the pil-pil technique. The technique relies on the cod's gelatin (released during cooking) emulsifying with olive oil through continuous gentle agitation. It is one of the most technically demanding dishes in Basque cuisine.

A bowl of translucent, gelatinous cod pieces in a silky, ivory-colored sauce. The texture is extraordinary — each piece is simultaneously tender and gelatinous, sliding across the tongue. The sauce is pure emulsion of oil and fish gelatin — creamy without any cream.

The pil-pil emulsion works like mayonnaise — oil is dispersed into tiny droplets suspended in the cod's gelatin (which acts as the emulsifier). The key is temperature control: the oil must be warm (not hot — hot oil breaks the emulsion) and the pot must be gently swirled continuously. The cod's gelatin naturally acts as an emulsifier because its protein molecules have both hydrophilic and hydrophobic regions.

Variations

Some use fresh hake kokotxas; green pil-pil (with parsley); some add garlic.

On the Palate

Where Kokotxas de Bacalao sits in the Spanish flavor cloud

Ingredients

Serves 4

How it's made

6 steps · 35 min active + 10 min waiting

1
2880 min
Desalt cod kokotxas (if salted) 24-48 hours in cold water.
2
5 min
Warm olive oil gently in a wide pan with sliced garlic.
3
12 min
Add kokotxas; cook at very low heat 10-12 min.
Watch out
Keep the heat so low the oil only trembles — barely any bubbles; too hot and the gelatin the cod releases will never emulsify later.
4
5 min
Remove from heat; gently swirl the pan in circles.
5
5 min
The oil and gelatin will emulsify into a white, creamy sauce.
Watch out
Off the heat, swirl steadily and watch the clear oil turn milky and thick as it grabs the gelatin — that pale creaminess is the pil-pil setting.
6
1 min
Continue swirling until thickened; serve immediately in warm bowls.

Archive tool suggestions — not reviewed

These legacy suggestions have not been evidence-reviewed and are not presented as required tools.

Dutch Oven

A heavy enameled or bare cast-iron lidded pot, 4-7 liters, with thick walls and a snug lid. The mass evens out hotspots; the lid traps moisture for braising. Sears on the stovetop, then transfers to a 150°C oven for 3-4 hours of even, contained heat — the structural difference between a beef bourguignon that comes out luminous and one that turns to gray mush. Le Creuset and Staub are the celebrated versions; an old American Wagner is functionally identical.

Techniques

Emulsification Poaching