Cupping is a specialized form of tasting used for critical evaluation of the
quality of a coffee. Coffee is measured and ground into a set of cups. Hot water
is then poured over the grounds in such a way that a single uninterrupted stream
of water both fills the cup and wets all of the coffee grounds. After a few
minutes, the cups contain brewed coffee with a crust of grounds on top. At this
time, cuppers can use a spoon to simultaneously break that crust of grounds and
smell the volatile compounds trapped beneath in order to evaluate the aroma of
the coffee. Any grounds that are still on top of the cup can then be scooped off
and cuppers can use the same spoon to take small amounts of coffee from the cups
and slurp it in such a way as to spray coffee over the entire inside surface of
the mouth to evaluate teh flavor of the coffee. The practice is reasonably
standardized among coffee professionals throughout the world. Seen here are
people from North America, South America, Africa, Europe, and Asia who all know
how to do this.