Tequila Clase Azul Mezcal Durango. Character, distinction, and beauty in one piece. Clase Azul Mezcal Durango is made from Cenizo Agave, an agave varietal that grows wild in the state of Durango in Northern Mexico. The combination of mineral-rich soil and water from natural springs give it a distinctive and smoky character with complex flavor notes. The distillation process faithfully follows artisanal methods to create a unique profile and pays tribute to the ancient mezcal tradition.