He summarized the seven most famous coffee drinks in the world. These included Espresso, Cappuccino, Americano, Café Latte, Caf au Lait, Café Mocha and Caramel Macchiato. Obviously, espresso can be considered the base of all other types of coffee and its caffeine content is much higher than others. Usually, unroasted coffee seems to contain more protein, acid, sugar and caffeine than roasted coffee. However, unroasted coffee does not taste like roasted coffee due to Mailard or other chemical reaction during roasting. Types of coffee beans: the coffee bean. (2014) mentioned that there are two main famous coffee beans. These are the Arabica coffee bean and the Robusta coffee bean. Compared to each other, Arabica coffee beans contain 50% less caffeine than Robusta coffee beans. The Robusta coffee bean is bitter while Arabica coffee is sweeter. Usually when people make espresso, they either choose to use 100% Arabica or 80% mild and 20%