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Crema is a golden foam composed of oils, proteins, and sugars, which floats on the surface of espresso coffee. It is a key component in the flavor of espresso. It has elements of both emulsion and colloid.

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List of closed London Underground stations

... York Road tube station[?] As are these stations, all of which were at the far end of the Metropolitan Line, and stretch the definition of "tube station" a ...

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