This L'Eixample tavern is known for its Gallic seafood tapas. Situated on the crossroads of Paseo de Gracia and Diagonal, the restaurant packs in crowds for small plates such as cantabrico, Bay of Biscay anchovies with crusty bread; slow-cooked pork neck with sea cucumbers; and empedrado, a salted cod salad. The design is decidedly French, with marble-toped counters and brass glass fixtures. Shelves of wine line the walls, and several Spanish selections are available by the glass. Reservations are a must at Bar Mut. Patio seating is available, but can be noisy at this well-trafficked intersection.