Filipino Balut on the Wiki (Pinoy Balut)

A balut (Trứng vịt lộn or Hột vịt lộn in Vietnamese, Pong tea khon in Cambodian, Khai Luk in Lao) is a fertilized duck (or chicken) egg with a nearly-developed embryo inside that is boiled and eaten in the shell. They are common, everyday food in some countries in Southeast Asia, such as in the Philippines, Cambodia, and Vietnam. Popularly believed to be an aphrodisiac and considered a high-protein, hearty snack, balut are mostly sold by street vendors in the regions where they are available. They are often served with beer. The Filipino and Malay word balut (balot) means “wrapped” – depending on pronunciation.

Read more: http://en.wikipedia.org/wiki/Balut_(egg)