Mercat Negre is not as dependable as its sister restaurant, Mercat in the East Village, but it's one of the only places to get Catalan-inflected food in New York. Perhaps the most unreconstructed dish on the menu is the arros de sepia, also called arros negre, or black rice, a specialty of the Costa Brava, which stretches blue and rocky along the Mediterranean, north of Barcelona. But the arros caÃ§ador, or hunter's rice, is a better dish. The rice, cooked paella-style with bunny rabbit, peppery pork sausage, and a base of sofrito, tastes earthy and satisfying. Croquettes, filled with salt cod or ham, are predictably delicious.