Coffee beans are produced on a bush. They are a fruit because they are the pit of a berry. Beans are classified into two types: green and red. Red beans have a more pleasant aroma and are less acidic. They are used in the production of lighter coffees. Coffee beans are healthier when they have been roasted for a longer period of time. Decaffeinated coffee is produced through a chemical process that removes the caffeine from the beans. Caffeine is frequently sold to Coca-Cola, a large buyer.