The oolong taste was really prominent with a subtle burnt flavour. Kuromitsu was also added to give an additional touch of flavour to the milk tea.
As for the purple sweet potato, I felt this was alot stronger tasting then the one I had at the pop up at takashimaya. It's really like having the mash version of the sweet potato, that's how "gao" it is. Can't wait to be back to try the other drinks.