Hong Kong ranks as one of the top food cities in the world. It's a combination of many factors - first there's thousands of restaurants and, if you are dining alone, the cost of a meal at many of these restaurants may be cheaper than shopping for groceries and preparing a meal yourself.
If you are in Hong Kong for a limited time it makes sense to focus on the local cuisine. There's quite a variety from dim sum to seafood and price range from street stalls to 3 Star Michelin Restaurants. It's best to pick a cross section of cuisines and coordinate where you are in the city with what restaurants are nearby. Chances are there is a Top 5 restaurant in a cuisine category within walking distance of wherever you are in the city.
DAI PAI DONGS AND COOKED FOOD CENTRES
Dim Sum is a traditional Cantonese dish - without going into too much detail Dim Sum is basically the Chinese version of Spanish tapas. Obviously the dishes are completely different but it's a similar concept in that you order a few small dishes to comprise a larger meal. Most of the dishes are served in a steamer basket.
Noodles may be more of a North China, above the Yangtze, dish, however, it is strongly represented in Hong Kong. What is overwhelming to the first time visitor is not just the different meals in which noodles are used, it's also the variety of the cut and composition of the noodles themselves. Each takes their own approach creating several favorites across the city.
In a section of the world where there is more rice than oats, congee is the gruel-like equivalent to oatmeal although since you can also eat it for dinner it's also similar to a thick soup. At the best congee restaurants, the plain rice is good alone, however, it's common to add a meat or a few vegetables to the dish for additional flavor.
Before moving to Hong Kong I scoured the city to ensure it had hamburger joints, pizzerias, fried chicken, and a few other foods I get cravings for from time to time. I've expanded the cravings to not only include Western cravings but also any non-Chinese cravings, like Japanese, Indian, Thai, etc. Most of these places in the central to tin hau "corridor" and Tsim Sha Tsui areas.