Mak's Noodle (Wellington Street, but visit the Tsim Sha Tsui outlet)

Mak's is famous across Hong Kong for its springy wontons in a delicate shrimp-roe broth and the Tsim Sha Tsui branch keeps shorter lines than the Central original. Order one bowl per person plus an extra serving of wontons to share and you will spend almost nothing for a lunch that locals have been eating since 1968.