Coffee is a brewed drink prepared from roasted coffee beans. The coffee beans are in fact the seeds of the Coffea plant berries. Green (unroasted) coffee is one of the most traded agricultural commodities in the world. The most used species are coffea arabica, and coffea canephora, (robusta).
Coffee is one of the most popular drinks in the world, and it can be brewed in various ways. Beans are ground and then brewed to make coffee. Depending on the brewing method the taste and flavor profile can be very different. The most popular brewing methods are:
The coffee beverage is slightly acidic, with a pH between 5.0 and 5.1. It has a stimulating effect because of its caffeine content, and touted as a potent antioxidant. Coffee is mildly addictive because of its stimulating effect, and can cause withdrawal symptoms.
There are numerous documented health benefits associated with coffee consumption, some related to the caffeine, some related to the antioxidants in the beans.
The abuse, however, will cause more problems than benefits.
The word coffee is also used for coffee beans, the coffee plant,, or the color medium to dark brown.