Cream (also known as crema) is a rich, thick liquid that forms on the surface of espresso. It is made up of coffee oils, proteins, and carbohydrates that have been emulsified by the brewing process. Cream has a yellow-ish color and a slightly bitter taste. It is an important component of espresso because it adds body and flavor to the drink. Cream is made up of coffee oils, proteins, and carbohydrates that have been emulsified by the brewing process. These components contribute to the rich, thick texture and slightly bitter taste of cream. The emulsification process also helps to preserve the cream so that it can be added to espresso drinks without affecting the flavor or quality of the espresso. Cream is an important component of espresso because it adds body and flavor to the drink. The rich texture of cream can help to balance out the bitterness of espresso, while the slightly bitter taste can add depth and complexity to the flavor of the drink. Cream can also help to improve the mouthfeel of espresso, making it smoother and more enjoyable to drink.