Tucked into Barcelona's Eixample district, O'Peregrino has spent more than three decades doing one thing with quiet obsession: sourcing the very best seafood the Spanish coasts have to offer and serving it with almost nothing standing in its way. Chef Alejandro, trained at Hofmann, doesn't wait for suppliers to send what's expected — he chases down the unusual catch, the outsized turbot, the rare lamprey, the prawns that barely make it to market, and brings them straight to eleven tables in the heart of the city.

The menu here isn't fixed so much as dictated by the tide. Fish and shellfish arrive daily from Galicia, the Cantabrian coast, Costa Brava, the Columbretes Islands and Cádiz, and what lands on your plate depends entirely on what the sea gave up that morning. Expect the likes of percebes, spider crab, razor clams, red prawns from Palamós, and hake prepared with little more than a grill, an oven, or nothing at all — the philosophy being that exceptional product needs restraint, not decoration.

Beyond the plate, O'Peregrino trades in something increasingly rare: unhurried hospitality from a team that's been together for years and genuinely remembers its regulars. There's no second seating, no clock-watching, just eleven tables and a staff that treats every diner like a familiar face. For anyone who wants to taste the Spanish coastline at its most honest, this is a Barcelona address worth booking well ahead for.