Crema (Italian, "cream") is a key component in the flavor of espresso with the appearance of a golden foam on the surface of the coffee. It is composed of oils, proteins and sugars. The crema has elements of both emulsion and colloid.

External links

• TooMuchCoffee: The European Coffee and Espresso Resource How to get that perfect crema on your espresso? FAQ's and discussion (non-commercial).