Herradura Seleccion Suprema Extra Aejo Tequila is crafted using agave harvested exclusively from the Casa Herradura estate. Once the agave have been harvested, the heart of the plant (the pia) is stripped away from its leaves using a special knife called acoaand cooked for approximately 26 hours in ovens made of stone and brick. During this cooking process, the once-white pias turn a deep orange color, and reveal an incredibly sweet and intense aroma (the pias are so sweet that chunks of cooked agave are often sold as candy in the street markets of Jalisco).