Zero One Coffee & Roastery is a cafe below the Central Mid-Levels Escalator in Hong Kong that serves coffee and simple food such as cakes and scones. The flat white and espresso are more nutty and rich than acidic. On the first floor there are bar seats facing the window, and on the second floor there are sofas and low tables where customers sit after ordering. The seating is small and the second floor is cramped, which creates noise.