What is an espresso?

An espresso is defined as a shot of concentrated coffee, produced by forcing hot water through finely-ground coffee beans. This method results in a rich flavor and a thicker consistency compared to regular brewed coffee. Espresso serves as the foundation for many coffee-based drinks, including lattes and cappuccinos. Its intense flavor profile and higher caffeine concentration (per ounce) distinguish it from other types of coffee beverages, making it a key product in many coffee shops. Understanding espresso is crucial for anyone involved in coffee preparation, as it plays a central role in various popular drinks. The other options describe different types of beverages that either include espresso as an ingredient or belong to entirely different categories of drinks, which do not capture the essence of what espresso is.