So I've been looking through Openrice and came across a chui chui (脆脆) while looking at 勝香園 in Central. I gather 脆脆 means "crispy crispy". You can see a photo in the first review:
The way it's present looks similar to Cantonese style condense milk with toast (奶油多). Although after reading some more I think it's actually a deep fried 'piggy bun' (豬仔包). I've always seen 豬仔包 in their original longer elongated form (sort of like mini french bread shape) and never seen it look like a hamburger bun shape. Any one can shed some light?