Coffee cupping is like a big tasting party for grown-ups who really love coffee! It's when people who make and sell coffee get together to taste lots of different kinds of beans.
First, they put the beans in a special grinder to make them into powder. Then, they put a little bit of the powder into a few cups and add hot water. The people who are doing the cupping will sniff and sip the coffee from each cup, to see how it tastes and smells.
They might use words like "fruity," "chocolatey," or "nutty" to describe what they taste. They'll also look at the color of the coffee and how thick or thin it is.
By cupping coffee, people can pick out their favorites and decide which kinds they want to sell in their shops. It's like being a coffee detective and having a really yummy investigation!