From - True Blue Imports:

Our blue agave is grown in the volcanic soil of western Jalisco where the grower utilizes a special proprietary technique that gives our harvested piñas an extremely high sugar content. This "super" agave allows us to put our blanco through a third distillation, imparting unprecedented smoothness while maintaining distinct agave character. We call this extremely special blanco "Cristalino" and think you will find it to be exceptional. The crisp, floral attributes and smoothness of Cristalino makes it an absolute pleasure to be sipped on its own, but these remarkable qualities will also make it your tequila of choice when mixing premium tequila cocktails.