Went to Ice Monster at PS the other day too. (Quite outdated these entries :p) Personally its more like a fast food, eat and go kinda place.
The ice mango and durian. On its own, each flavour was great, but didn't really go well together.
And I had some of the BBQ sauce beef noodles. The portion was kinda small, but the gravy was really rich and thick. Yummy!
In all, the food is great, but ranging from $12-$15 per dish, it is on the steep side. Best shared with friends for a quick snack or cravings munchie =P