Pulque is an old alcoholic beverage that has been made in Mexico for many centuries. Now it is not very common, and it can only be found in small little breweries that specialize in its production. It is made on a weekly basis so as to not make it too strong. It is made from the scraped leaves of the agave plant, and is often mixed with guayaba.
The flavor is not like any other alcoholic beverage I know. The closest taste might be mead - honey wine. It is slightly sour. Maybe not my favorite alcoholic beverage, but definitely a cultural treat.