Camarónes al Mojo de AjoNogales, in the state of Sonora on the Arizona-Mexico border, is one of the oldest border towns in Mexico. It has been an important trade route since 1880 and is now a popular gateway for visitors entering Mexico. When my husband and I lived in Phoenix many years ago, we traveled to Nogales as day visitors to shop and to eat fresh shrimp in butter-rich garlic sauce at La Roca restaurant. (Our Arizona friends tell us that La Roca is still there and the shrimp are as good as ever.)A huge portion of shrimp, from Guaymas on the Sea of Cortez, was piled in the center of a large plate, with rice on one side and a slim wedge of iceberg lettuce with Thousand Island dressing on the other. This is my interpretation of La Roca's garlic shrimp. Serve over Mexican Rice.