Kouzanrou (江山楼 中華街本店)

Kouzanrou's flagship location anchors Nagasaki Chinatown and is widely cited by locals as the top-ranked champon kitchen among the district's many competing noodle shops. The restaurant is run by a family with generations of experience in Nagasaki Chinese cooking, a cuisine distinct from mainland Chinese food, having evolved locally since the 19th century among the city's resident Chinese community. The signature champon uses a rich pork-bone-and-seafood broth loaded with pork, shrimp, squid, and vegetables over thick, chewy noodles, while the sara udon offers a crisp-fried alternative. The kakuni-man, a soft steamed bun stuffed with braised pork belly, is a popular addition for those wanting a smaller bite alongside noodles. The multi-floor building includes both open dining rooms and private rooms suited to groups, with a lively, bustling atmosphere reflecting its position on Chinatown's busiest street. There is no dress code, and the mood is casual and family-friendly rather than quiet or refined. Beverage offerings run to Chinese tea, beer, and soft drinks rather than a curated wine list. Weekends bring some of the longest queues in Chinatown, so reservations are recommended for those visiting on Saturday or Sunday, particularly for the private rooms; weekday lunch is typically more accessible on a walk-in basis. Prices remain moderate for the quality and reputation, keeping the restaurant a reliable choice for both first-time champon tasters and Nagasaki regulars alike.