Here are some of the things I sampled in Hong Kong and Macau:

Bak kwa (sweet-salty sheets of dried barbecue meat, similar to jerky)

Portugese egg tarts

Siu mai dumplings and cha siu bao (barbecue pork buns)

Har gow dumplings

Cheung fun (steam rice noodle rolls) filled with pork

Steamed eggs with soy sauce

Tofu soup

Rice noodles with fish cakes in soup

Black glutinous rice and taro paste

Durian cheesecake

Gai daan ja (eggette)