Balut "Balut is a three-week fertilized duck embryo that is boiled and eaten in the shell," explains iReporter Jerry. "This is common everyday food among Filipinos and mostly sold by street vendor in the Philippines. Many people here believed that this food is an aphrodisiac and considered a high-protein and hearty snack. "Adding salt and vinegar is the best way to eat this exotic food. Some people prefer eating it in a dark room to avoid looking at the embryo."