Pertin Lotte World Branch is a Vietnamese pho restaurant located across from Bukchangdong Sundubu inside Lotte World. Its bun bo hue contains bean sprouts, fish balls, and flame-grilled beef, and the broth can be added as a regular pho broth. The restaurant sits off the main Food Avenue, so seating is immediate and food comes out quickly. The meat in the pho has an odor.