Jeongseong Mandu is a mandu specialist in an alley off the market street in Bongcheon-dong, Seoul. The meat mandu uses rendered scallion oil instead of pork fat, and the vegetables stay crisp. Mandu are steamed to order in a steamer, so the wait is about ten minutes, and takeout is possible by calling five minutes before arrival. Without pork fat, the mandu are less juicy than expected.