El Tesoro 80th Anniversary Extra Añejo is a tequila created by Carlos Camarena, distilled at Tequila Tapatio, S.A. de C.V. (La Alteña) in Highlands/Los Altos, Arandas. It is cooked in Stone/Brick Ovens and crushed using a Roller Mill. The type of fermentation is Closed tank, and the spirit is distilled in Pot Still. Bottled at NOM #1139 with 100% agave, it is released at 41.5% abv (83-proof).