Boston isn’t known yet for great Mexican fare—perhaps we’re a little too far north of the border for the spicy stuff. But things are looking up now that El Centro has rolled into town. Our go-to order? The deeply flavored ;carne asada and fish tacos, followed by ;al pastor sopes (doughy corn tartlets). Top that off with a couple glasses of jalapeño-spiked sangria, and you’ll easily silence any naysayers.