Wu kok is the one to be careful with bro. That gorgeous lacy crispy shell does not happen for free. It is mashed taro bound with fat, then deep-fried, and deep-fried mashed starch drinks oil like nothing else. One single puff is around 150 calories. Two and you are at 300, for what feels like a light, airy snack.
I am not saying never eat it. It is genuinely one of the best-tasting things on the trolley. I am saying respect it. This is the opposite of har gao. Same 300 calories gets you nearly six prawn dumplings full of protein, or two taro puffs that are mostly oil and starch. Pick your spots.