There's no shortage of Mexican restaurants on Federal Boulevard, but Tarasco's is something special. While the tiny corner joint may not have all the frills of fine dining, the service is as warm and accommodating as at any starred restaurant in town. And every dish on the menu shines, no matter how simple the preparation. Grilled nopales (cactus paddles) come on a wooden board with a thin but tongue-blistering sauce. A humble vegetarian corn tamal rises to the level of haute cuisine with nothing more than a drizzle of Mexican crema and a hint of salsa verde. A seven-chile mole cloaks tender chicken or pork with richness and complexity while avoiding cloying sweetness. Tarasco's also cooks up an equally delicious but slightly tangier green mole and a rare yellow mole; go with friends to try them all. And despite the lack of a liquor license, beverages are well covered by a roster of fruit and vegetable juices and smoothies.