Coffee is a brewed drink prepared from roasted coffee beans, the seeds of
berries from certain Coffea species. All fruit must be further processed
from a raw material—the fruit and seed—into a stable, raw product;
un-roasted, green coffee. Coffee culture is the set of traditions and
social behaviors that surround the consumption of coffee, particularly as
a social lubricant. The term also refers to the cultural diffusion and
adoption of coffee as a widely consumed stimulant.