Casamigos agaves are 100% Blue Weber . aged 7-9 years . from the rich clay soil of the Highlands of Jalisco . Mexico. The unique flavor is a result of an 80 hour fermentation process . compared to the average 48 hours. Their agave piñas are roasted in traditional brick ovens for 72 hours . while most others steam theirs for 7 hours. Casamigos Master Distiller uses a special yeast blend resulting in a consistent . refined flavor . unlike the commercial yeasts others use.