Aside from all the deductions claiming that the brewers were women, and that they had a big ritual before burning the brewery and leaving it... I think it's important to keep in mind that alcohol might have been very important thousands of years ago in the Americas. Perhaps Machu Picchu was a brewery too?

“Chicha, which is often made from maize, was at the heart of this culture, and this is one of the oldest and largest pre-Inca breweries ever discovered in the Americas,” said Patrick Ryan Williams of the Field Museum in Chicago. “Our analyses indicate that this specialty brew was a high-class affair. Corn and Peruvian pepper-tree berries were used to make the beer, which was drunk from elaborate beakers up to half a gallon in volume.” The outpost was partially burned down upon its evacuation, Ryan and colleagues say. Chicha was brewed by a team of select, high-status women because it was so important to the Wari, according to the researchers. They concluded this from the many elegant metal shawl pins found in the three-room brewery, which were absent elsewhere in the extensive ruins. The brewmistresses were probably chosen for their beauty or nobility, the archaeologists said.

(Or for their brewing skills??)

Source: World-Science.net