Dining Outside the Home: El Nopal Mexican Restaurant in Louisville, Kentucky! Be bold. Slide into a booth as the staff quickly appears with a basket of salty, warm tortilla chips and a couple carafes of Mexican salsa. This is how to get the evening started at El Nopal. In a matter of minutes, two lime margaritas are delivered to the table. One sip reveals a burst of freshness followed by a citrusy finish. Why do we like Mexican food so much? Perhaps it’s the family atmosphere, the kick of spice, or the sizzling fajitas. More than likely, it’s the queso cheese! Am I right? Between the fresh veggies, the guacamole, and the refried beans, it all comes together for the perfect combination.