Lambanog is a Philippine alcoholic beverage most commonly described as coconut wine or coconut vodka. The drink is distilled from the sap of the unopened coconut flower, and is known for its potency and high alcohol content (80 and 90 proof). Because of the abundance of coconut trees and the inexpensive distilling process in making lambanog, the drink is known as "the poor man's drink". Farmers often wind down by drinking lambanog after a long day’s work. In most parts of the country, drinking lambanog is usually a communal thing – men sit around in a circle and take turns drinking shots from a cup placed in the middle of the group. Usually, there is also someone singing and playing the guitar to add to the festivities; he takes his turn at drinking too, so the music gets more interesting as the drinking goes on.
For more information on lambanog:
http://www1.american.edu/ted/lambanog.htm