Below are the must-haves when I go to HK. I just can't get this stuff in L.A. Let me know what are your favorites. Excuse my pin yin.
Tai Ping Koon (wonderful pigeon at a nice, clean restaurant; the one in Yau Mai Tai is the best!)
Kong Wao Tofu Factory (best tofu-fu ever, I go to the one in Kowloon City)
Dak Cheung Fish Balls (best fish ball noodle soup, for some reason there is just no HK-quality fish balls in L.A.)
Buffets at hotels (Marriott, Intercontinental, Waichai Convention Center) (super variety and quality and superb desserts; I can't find better quality buffets elsewhere)
Food stalls with porridge, fried donuts, rice noodles (these places are dirty and for locals, but I can't seem to find the same quality of porridge and especially not of the rice noodles and fried donuts)
Curry fish balls off a street vendor (wonderful stuff)