Agave maintenance once established. "Agave azul" (blue agave) is used in the production of tequila. In 2001, the Mexican Government and European Union agreed upon the classification of tequila and its categories. All 100% blue agave tequila must be made from the "Agave tequilana" 'Weber's Blue' agave plant, to rigorous specifications and only in certain Mexican states. The hybridized genus ×"Mangave" is created by cross-breeding species of "Manfreda" and "Agave". The ethnobotany of the agave was described by William H. Prescott in 1843: But the miracle of nature was the great Mexican aloe, or maguey, whose clustering pyramids of flowers, towering
Agave shrevei slowly compared to larger agaves. Some of the indigenous peoples of the region consume the plant as a food source. The immature flowering stalks are sweet and juicy and easy to harvest. People either eat them raw or brew them into alcoholic beverages. The leaf bases are also edible, but require roasting to destroy unpleasant chemical compounds Agave shrevei Agave shrevei is a member of the family Asparagaceae, indigenous to the Sierra Madre Occidental in Mexico, along the boundary between the states of Chihuahua and Sonora. Two subspecies are currently recognized, although a third has been proposed ("A. shrevei" subsp.