 Though other types of mezcal are not as popular as tequila (made specifically from the blue agave in select regions of the country), Mexico does export the product, mostly to Japan and the United States, and exports are growing.Despite the similar name, mezcal does not contain mescaline or other psychedelic substances.The agave was one of the most sacred plants in pre-Spanish Mexico, and had a privileged position in religious rituals, mythology and the economy.