Along San Antonio’s River Walk (the water’s murky to opaque, but hey, it’s still a river), lives a European-flavored bistro and wine bar in a stately, historic structure that serves food until late . . . but if you’re thinking of the greasy stuff typical of a stereotypical post-bar haunt, you’re mistaken. A cellar hosting some 4,000 bottles keeps diners tipsy as they peruse an elevated menu of “faux gras” (made with chicken liver pate, cherries and pistachios) and crab cakes with pear and avocado. If you’re dying for a sandwich and fries, though, a lamb burger with brie and fig jam or a shrimp po’ boy should sate cravings. Bring a date out onto the brick-paved alleyway courtyard, or perch on a plush seat in the white-stone walled dining room.