Yuca does it fancier, plenty of places on Calle Ocho do it with more elegance, but the best Cuban cooking is home cooking, and that's what Sergio's has been serving in a consistently impressive manner since 1975. It's a coffee shop at 6:00 a.m., when the first café cubanos come steaming from the machine; a luncheonette in the afternoon, as piles of Cuban sandwiches get pressed; and at dinnertime the mostly Cuban clientele packs the place for flavorful renditions of their comidas favoritas. The prices are right, too: A grilled eight-ounce palomilla steak with rice, beans, and choice of plantains or fries, costs just $6.50. The crowd gets louder and livelier as Sergio's switches gears again late Friday and Saturday nights, when it stays open 24 hours.