Boquerones en Vinagre

These white anchovies, cured in white wine vinegar and brightened with garlic and flat-leaf parsley, are a pure expression of Mediterranean Spanish cooking. The preparation is essentially a ceviche: the vinegar's acidity denatures the fish protein, transforming raw fillets into an opaque, firm texture without any heat. The finest boquerones hail from Málaga, where anchovies caught in the Mediterranean are considered ideal for this delicate preparation. You'll also find excellent versions along the Costa Brava and the Cantabrian coast. Look for fillets that are vibrant white, avoiding any grey or yellowish discoloration, with a firm bite, and generously dressed with olive oil to perfectly balance the vinegar's sharpness. A racíon typically costs €5–10 at most bars. This dish, perhaps more than anything else on this list, pairs beautifully with a chilled glass of fino sherry. Steer clear of pre-packaged, brine-packed versions – they're a completely different product and won't deliver the authentic experience you're seeking.