Everyone who roasts coffee and most sellers taste the final product in what is known as “coffee cutting/tasting”. As in the case of a real wine tasting, the coffee is not swallowed. When you taste the coffee, simply leave it, spread it in your mouth to observe the whole variety of aspects, then take it out of your mouth in a container located nearby.
Do you like coffee and look forward to enjoying a cup of coffee, but would you like to have a better appreciation for the multitude of differences and subtle taste experiences? Then you need to develop a more refined coffee taste.