Fry the wonton chips for this heavenly hors d’oeuvre up to two days in advance (store them in an airtight container) and then get to shredding the duck confit: It’s a finger-licking job that you can do the night before. On the big day,
get your helpers to top the squares with the seasoned duck and quick carrot pickle and, at the last second, shower it all with julienned green onion and sesame seeds.