Some controversy is associated with coffee cultivation and its impact on the environment. Many studies have examined the relationship between coffee consumption and certain medical conditions; whether the effects of coffee are positive or negative is still disputed.[7].
Espresso-based coffee has a wide variety of Keurig Brewer possible presentations. In its most basic form, it is served alone as a "shot" or in the more watered down style café américanoâa shot or two of espresso with hot water.[58] The Americano should be served with the espresso shots on top of the hot water to preserve the crema. Milk can be added in various forms to espresso: steamed milk makes a cafè latte,[59] equal parts espresso and milk froth make a cappuccino,[58] and a dollop of hot, foamed milk on top creates a caffè macchiato.[60]