Lan Fong Yuen@蘭芳園 is a very Hong Kong style restaurant. Located in Central (the original shop) and have branches everywhere.
Be prepared! The shop is rather small and always crowded with tourists. Sharing table with strangers is unavoidable.
One of the best milk tea in town. 絲襪靓奶茶
My hubby order this – also one of the must order! 蔥油雞扒撈丁
Pork chop bun 豬扒包
7 up + plum pickle 鹹檸七 
Not really recall how much we paid. But you could check out the below menu
蘭芳園@Lan Fong Yuen 2 Gage Street, Central 中環結志街2號
How to get there – MTR Central Station, Exit D1 or D2, also can. 6-10 minutes walk
Adventure Appetite 