This street food is common in the Philippines, Cambodia, and Vietnam and is loved by many. Balut is a fertilized bird egg, usually a duck, that has been incubated between 14 and 21 days.

other countries have their own versions of balut: Vietnam has hôt vit lôn while Cambodia calls theirs phog tea khon. The difference lies in the number of days the egg is left to incubate.

We went to Maharlika in New York City to try Balut—a hard-boiled egg with a developing duck inside. Balut is a common street food in the Philippines. The waiter at Maharlika told us that this ...