While techniques vary in Sonora, one common theme is that for the production, especially for the distillation, recycled parts such as pots, drums or other elements are used to build fermenters and stills. This is due to the persecution suffered by producers since the beginning of the 20th century, where their production facilities were often destroyed by government officials. Another interesting aspect that is perhaps a remnant of the prohibition era, is the fermentation of agave in underground holes or wells made of earth and stone; distillates made in this way are known as “Vino de Barranco” (wine of the ravine).