Arabica coffee is considered superior to Robusta because of its delicate flavor and low acidity. This variety is grown at higher altitudes and can be more difficult and costly to grow.
To prepare the green coffee bean for brewing, it must first be roasted. Coffee beans are roasted with dry heat and with constant agitation to ensure even heating. The range of roasts varies from light golden brown all the way to a dark, almost black appearance. Varying the roasting time has a significant effect on the flavor, aroma, and color of the brewed coffee. Although there are several levels of roasting, they can be grouped into three main categories: light, medium, and dark.