Bacalao al Pil Pil

Basque Country, northern Spain (Bilbao and San Sebastián tradition)

Bacalao al pil pil is one of the Basque Country's most revered dishes — a technical feat that produces a trembling, alabaster sauce from three ingredients: salt cod, olive oil, and garlic, with the sauce forming entirely through the natural gelatin released by the fish into the oil. Desalted salt cod is fried gently in olive oil with garlic; the fish is then removed and the hot oil agitated by swirling the earthenware cazuela in a circular motion as the cooking juices are gradually reintroduced. The proteins and gelatin from the cod act as an emulsifier, binding the oil into a thick, creamy, trembling sauce — no cream, no starch, no butter, nothing but the fish's own chemistry. The sauce should be opaque white and flow slowly, coating the cod when it is returned to the pan.

Txakoli (the lightly sparkling Basque white wine with high acidity) is the canonical pairing — its tartness and effervescence cut through the richness of the oil sauce and refresh the palate between bites.