This dish does concern some tourists, and many don't like trying it. But ones that do, can't have enough of it. The Balut is a street food, consumed as a snack and is basically duck embryo. The duck embryo is first thoroughly boiled, and enough vinegar added for flavour. Besides, the embryo needs to be at least 17 days old for it to be edible, if not, the embryo develops claws, feathers and beaks, which isn't something you want to bite into. This one might raise eyebrows, but well if it's one of the famous Filipino street food, there's got to be something exquisite about it, right?