What is Extra Añejo Tequila? Añejo tequilas a premium tasting tequila, aged in oak barrels for at least 6 years. It is described by profound brilliant tone and complex flavor has notes of oak, vanilla, and caramel. It is produced using the blue Weber agave plant and must be created in five Mexican states. It tastes really smooth, with notes of oak, vanilla, and caramel, and is best appreciated slick or on the rocks. Don Ferro Extra Anejo Tequila is one of the best sipping tequila around.