Bar Mut occupies a corner position on Carrer de Pau Claris, just off Passeig de Gràcia, and has been a fixture of the upper Eixample for long enough that it feels like an institution without ever having become stiff. The name comes from the Catalan for a type of glass. A mute, clear vessel. And the restaurant has that quality too: transparent in its intentions, perfectly calibrated, never obscuring what it is.
The room is intimate and slightly cramped in the manner of the best bars, lined floor to ceiling with bottles that are there to be opened rather than displayed. High wooden stools line the marble counter; small tables are arranged throughout the space with the efficient density of someone who has spent time in Paris. A small terrace opens onto the street when the weather cooperates, which in Barcelona is reliably often.
The daily chalkboard is Bar Mut's signature: seasonal specials written up each morning and erased when they sell out, which they reliably do by early afternoon. Recurring staples include seafood paella that arrives in a clay pan with the proper crust forming at the edges; a steak served either with mushrooms or foie gras that speaks to the kitchen's confidence in quality over complexity; and lobster cooked with egg and brandy that is the kind of dish you return to a city specifically to eat again.
The OpenTable rating of 4.7 from 146 diners is exceptional and says something specific: this is not a restaurant for first impressions. It earns its marks from people who come back. Regulars know to arrive early. The tables fill quickly and the best daily specials disappear faster.