The Milenio expression from the 1800 brand is crafted as the ultra‑premium, luxurious end‑member of the lineup. Created in the year 2000 to mark the new millennium, this tequila honors more than 250 years of family tradition and eleven generations of expert tequila‑making. 

It begins with 100 % blue Weber agave, hand‑harvested at its peak. The agave hearts are then gently steamed in traditional masonry ovens for an extended period to extract the richest possible nectar. 

After that, the juice is double‑distilled and then subjected to a prolonged aging process. Initially it is matured in new American oak barrels for about 40 months. 

Then the top portion of that batch is selected and finished in French oak ex‑cognac barrels for additional months, often cited as about 4 months.