The huauhtli was domesticated by the native peoples of central Mexico, and between 1500 and 900 B.C., its cultivation was already widespread among the people of the region. This plant is included as a historical food heritage in rural localities in eastern Morelos, in Huazulco and Amilcingo, municipality of Temoac, in the Amatzinac Ravine (Barranca del Amatzinac) region; and also, in the small cities on the slopes south of the Popocatépetl volcano, belonging to the municipality of Tochimilco and Atzitzihuacán. The pueblos of Morelos, in addition to cultivating the huauhtli, are specialized in the elaboration of products based on amaranth. In the communities of the volcano this plant is cultivated since ancient times, and today they are the main producers nationwide. These peoples protected the varieties of huauhtli, even in disastrous conditions, such as the loss of irrigation water, t...