Donki drinks are rlly my happy affordable comfort thrills!!! Personally I have tried sweet potato, matcha and hojicha latte - they premake them so you can’t opt for no / less sugar but it’s not too sweet itself so all’s good :-) the drink itself is really smooth (especially with the Hokkaido milk that they used). Out of the 3 I would say that hojicha is my favourite - has the roasted earthy taste ; matcha was slightly sweeter and sweet potato was slightly too thick for a drink for my liking (got gelat real quick), felt more like a dessert!!