Balut, a boiled duck egg with a small embryo inside, is a delicacy  enjoyed all across Philippines. Though eating balut has gained global  stature as extreme gastronomy, the average Filipino considers it a  delicious treat. Unlike other street foods, balut is always safe as it  is always sold piping hot and sealed (unopened). Nutritious and  flavorful, it is a staple for people working late in the night or coming  home in the wee hours of the morning. 
How to Eat Balut: Step-by-Step Instructions - wikiHow
Peace,
dave
**EDIT** -- This info really added a new dimension to the story for me