The one I had in mind was Tim Ho Wan in Sham Shui Po, but they have restaurants throughout the city. But looking at the current Michelin Guide, I see it's just "Michelin recommended" as opposed to 1 star. I'm not sure if the rating has been changed since I went or if I'm mixing it up with a different one, but either way it was very good and service was crazy efficient! Gonna have to check out the one in the airport if I'm ever in HK again. The whole food scene in HK is great, never had a bad or even average meal there.