Coffee Beans Crema is a phenomenon cherished by coffee aficionados worldwide. Crema refers to the golden-brown layer of foam that sits atop a freshly brewed espresso shot. It's a sign of quality and freshness in espresso, indicating proper extraction and a well-roasted coffee bean.

The formation of crema occurs during the brewing process when carbon dioxide gas, trapped within the coffee grounds during roasting, is released as hot water passes through the coffee bed under pressure. This gas mixes with coffee oils, forming tiny bubbles that rise to the surface, creating the creamy layer known as crema.