Bacalao al Pil-Pil
Basque salt cod gently poached in olive oil until tender, then agitated to create a silky, emulsified sauce. The result is rich, garlicky, and deeply savory with a luxurious texture that coats the tongue.
A little context
Hailing from the Basque Country, this dish is a staple of traditional txoko (gastronomic societies). The technique relies on the natural gelatin from the cod skin to emulsify the garlic-infused oil without adding flour or egg. It is traditionally served during festive meals or on Fridays, accompanied by boiled potatoes to soak up the sauce.
Method
- 01
Verify desalting
Ensure the salt cod has been soaked for 48 hours, changing water every 12 hours. Taste a small piece; it should be mild, not salty. Pat dry thoroughly with paper towels.
- 02
Heat the oil
Pour the olive oil into the heavy skillet over medium-low heat. Attach the thermometer and bring the oil to 65C (150F).
- 03
Infuse aromatics
Add the sliced garlic and dried guindilla peppers to the oil. Cook gently for 2 minutes until the garlic is pale gold, not brown.
- 04
Add the cod
Place the cod fillets skin-side down into the oil. The oil should barely simmer. If it bubbles aggressively, remove from heat immediately.
- 05
Poach gently
Maintain oil temperature between 60C and 70C (140F-160F). Cook for 10-15 minutes until the flesh is opaque and flakes easily.
- 06
Remove the fish
Carefully lift the cod out with the slotted spoon and transfer to a warm serving platter. Cover loosely with foil.
- 07
Create the emulsion
Return the pan to very low heat. Shake the pan in a circular motion or stir gently. The oil will turn cloudy and foamy as it emulsifies with the fish gelatin.
- 08
Finish the sauce
Once the sauce is thick and creamy, remove from heat. Stir in the lemon juice if using to brighten the flavor.
- 09
Serve immediately
Spoon the foamy pil-pil sauce generously over the cod. Serve hot to maintain the emulsion texture.
Pro tips
- ✦Do not whisk the sauce; agitate the pan in circles to create the emulsion naturally.
- ✦Keep the oil temperature below 70C (160F) to prevent the sauce from breaking.
- ✦Save the oil after cooking; it is infused with cod flavor and makes excellent dressing for salads.
- ✦Skin-on fillets are mandatory; the collagen is the emulsifying agent.
- ✦If the sauce breaks, remove from heat and whisk in a teaspoon of cold water to rebind.
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Substitutions
- dried guindilla peppers → 1 g dried red pepper flakes (adjust heat to preference)
- fresh lemon juice → omit (traditionalists skip this, but it helps stability)
Storage
Refrigerate in an airtight container for up to 2 days. The emulsion may separate when cold; reheat gently and shake to restore texture.
What to serve with it
- Boiled baby potatoes
- Crusty rustic bread
- Albariño or Txakoli white wine
FAQ
Can I use fresh cod instead of salt cod?+
No. Fresh cod lacks the necessary gelatin in the skin to create the emulsion. Use salt cod soaked properly.
Why did my sauce separate?+
The oil was likely too hot or the emulsion wasn't agitated enough. Keep temperature low and shake the pan constantly.
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