Budget
Tai Po Hui Market
(http://www.fehd.gov.hk/ev...). a modern complex of small stalls. the must-try items are fried pork chop noodles and fish ball noodles. also, for as little as $10 a dish, you can choose from a variety of culinary styles, including local favourites and dishes from shanghai, japan and south asia. tai po hui market cooked food centre is located near tai po market mtr station.
The mall adjacent to the Tsuen Wan MTR station has many cheap little eateries, none of which have disappointed, and the blocks surrounding it have lots of small bakeries. There are worse ways to spend an early morning than wandering around, inhaling the scent of the neighbourhood and snacking on wonderfully flavoured buns and confections from these establishments.
Midrange
Dragon Inn Seafood Restaurant
is a famous seafood restaurant in Tuen Mun. The price is more valuable than Sai Kung and you can go to the Sam Shing market to choose your seafood which would provide more variation. It is ranked one of the best seafood restaurant in Hong Kong.
If you're looking for an evening out whilst touring in the New Territories, head for Sai Kung 西貢 where you will find a good range of visitor-friendly pubs and restaurants. Sai Kung is rightly famous for its seafood restaurants along the quayside, where you can pick your dinner from an aquarium and have it served any way you like. However, if downing a bucket of bottled beers whilst munching on a plate of crustaceans is not your thing, there is also a fairly good selection of eateries and watering holes to be found in the town centre. Prices here can be reasonable and the cuisine ranges from local to western. Various well-known burger and coffee shops have also found their way to this otherwise secluded part of Hong Kong.
The fastest way to Sai Kung by public transport is to take the MTR to Choi Hung and transfer to minibus 1M every 5 min for a straight hop across the mountains. There are public KMB buses from Sha Tin route 299 and Wu Kai Sha route 99 as well, but they take the long way around and spend the better part of an hour in the process. An urban taxi from Central, on Hong Kong island, will cost just under $200 including tunnel fees.
Compared with restaurants in Kowloon or Hong Kong Island, the New Territories offers a good range of local dishes, but at a cheaper price. The eateries recommended here are unlikely to have English menus and the odds are that staff are probably not able to speak very good English or Mandarin. If the place is busy, the staff will not have time to help you.