Romesco

Tarragona, Catalonia, Spain (fishing port tradition)

Romesco is Catalonia's most architecturally complex condiment: a roasted red pepper and tomato sauce thickened with ñora peppers (dried, sweet Spanish pepper), toasted hazelnuts and almonds, garlic, and stale bread, bound with olive oil and sherry vinegar. It originated in the fishing port of Tarragona as a sauce for seafood and is now inseparable from the spring calçotada (the feast of grilled young onions). The ñora pepper provides a deep, dark, raisin-like sweetness that cannot be replicated; the toasted nuts add body and richness; the bread creates an emulsifying matrix that gives the sauce its characteristic dense, slightly grainy texture. Romesco should not be smooth — the hand-crafted granularity of traditionally pounded versions is part of the identity.

Calçots (grilled spring onions) are the canonical vehicle; grilled fish, lamb, and roasted vegetables all accept romesco naturally; a glass of Priorat or Montsant red wine with mineral depth complements the sauce's complex sweetness.