Al pil-pil
Basque emulsion technique where salt cod and olive oil are swirled together off-heat until the gelatin from the fish thickens the oil into a glossy yellow sauce.
Al pil-pil is one of the great Basque kitchen tricks. You poach salt cod (almost always with the skin on, because that's where the gelatin lives) gently in olive oil with garlic and dried chilli. You then take the pan off the heat and start swirling it in slow circles. The gelatin leaches out of the cod and emulsifies the oil into a thick, glossy, pale-yellow sauce. The verb is moverlo, 'move it,' and a Basque chef can do it with a casserole in one hand and the other in their pocket. The name 'pil-pil' is meant to imitate the soft bubbling sound the sauce makes.
How it's served
In a small earthenware casserole, sauce and cod together, with crusty bread to scoop it up. Bacalao al pil-pil is one of the foundational dishes of Basque cuisine, on practically every traditional menu in San Sebastián and Bilbao.
Regional variation
Bacalao al pil-pil is the canonical version. Some restaurants add piparra peppers; others split the dish into two emulsions, the white pil-pil and a green vizcaína with parsley. The technique has migrated into Spanish modernist cooking and shows up on cod cheeks, hake throats and even prawns.
- Origin
- Basque Country
- Etymology
- Onomatopoeic Basque, meant to suggest the soft 'pil pil' sound of the oil bubbling.
Where to try it in Barcelona
2 restaurants on Guidavera mention al pil-pil in their kitchen description.
Frequently asked
What is bacalao al pil-pil?
Salt cod cooked in olive oil with garlic and dried chilli, then swirled off-heat until the gelatin from the cod emulsifies the oil into a thick yellow sauce. A foundational Basque dish, named for the soft bubbling sound the sauce makes during the swirl.
Why does pil-pil sauce thicken?
Salt cod skin is rich in gelatin. When the cod cooks in oil, the gelatin leaches out. Swirling the pan creates a mechanical emulsion: tiny gelatin droplets coat the oil and bind it into a sauce. No flour, no cream; the cod itself thickens the oil.
Can you make pil-pil without salt cod?
Not in the traditional sense, because the gelatin in the cod skin is doing the work. Some modern Spanish kitchens use cod cheeks (kokotxas) or hake throats, both of which are gelatin-rich. A pil-pil with prawn heads exists but is more of a riff than the real thing.
Related terms
- BacallàSalt-cured Atlantic cod. The backbone of Catalan, Basque and inland-Spanish cooking for centuries; soaked in water before use, then prepared a hundred different ways.
- KokotxasThe small gelatinous chin pockets of hake or cod. A Basque specialty, cooked in pil-pil emulsion or briefly in garlic and oil.
- TxangurroBasque spider crab dish: shredded crabmeat sautéed with onion, tomato, brandy and breadcrumbs, baked back inside the crab's own shell.