Who doesn't like Bang Bang? :)
Bang Bang is not a spot you'd try once and move along. You'll come back, and back, and probably back for a 2nd time the same day. If you're not sure what it is, essentially it's an ice cream parlour where you can get your ice cream in the form of a sammie between cookies, puff pastry, macaron or even a cinnamon bun. If you're more about the cone life, you can also get it with a sugar, waffle or HK waffle cone. There are so many ways to have your ice cream dessert, this is why you will keep coming back!
There are a number of different ice cream flavours - many of asian-related flavors. My favourite is anything matcha or milk tea related. Their taro isn't bad either.
Tip: come during weekdays right before dinner to avoid the rush - this worked for on many occasions. Also, don't forget to get their loyalty card because I'm highly certain you'll go again.