The Single-Barrel Añejo has been the most successful product of the popular Porfidio line. Normally tequila añejo is stored in a number of oak barrels and upon completion of the aging process the contents of each barrel is then combined prior to bottling in order to achieve a level of consistency from bottle to bottle. The contents of each bottle of Porfidio Cactus Single-Barrel is direct from a single selected barrel.