Entrecôte Bordelaise

The dish belongs to Bordeaux, and its sauce — sauce bordelaise — is named for the region and its wine. The classic and modern version is built on red Bordeaux wine, shallots, demi-glace and bone marrow; notably, Auguste Escoffier's own recipe in Ma cuisine specifies white wine rather than red, so the red-wine form generally served today is one of two documented traditions. The pairing of local steak with a local red-wine sauce reflects long Bordelais practice rather than a single dated invention, and the exact origin of the dish is not precisely recorded.

The entrecôte is a well-marbled, forgiving cut — seared hard, it gives a crisp brown crust and a juicy, faintly chewy interior best kept rare to medium-rare. The bordelaise is dark and glossy, tasting of reduced red wine: tannic and savory, edged with sweet softened shallot. The poached marrow is the surprise — silky, almost buttery, dissolving on the tongue and smoothing the wine's acidity. A good plate has crust on the meat and a sauce that clings; a poor one is grey steak under a thin, sharp wine gravy with no marrow to round it.

Two things make the dish. First, the steak: a hot, dry sear drives the Maillard reaction to build a brown, savory crust, while a short cook keeps the well-marbled muscle juicy and tender. Second, the sauce: red wine is reduced with aromatics to drive off alcohol and concentrate its acids, tannins and fruit, then bound with demi-glace — a long-simmered, gelatin-rich brown stock — so it coats a spoon. The bone marrow, gently poached so it sets just enough to hold its shape, is folded in or laid over the meat; its rendered fat emulsifies into the reduction, smoothing the tannic edge and giving the sauce its characteristic velvet body.