A sommelier is a wine expert who is hired by a variety of establishments to test different wines to be served to their customers. In the book, The Extraordinary Powers of our Five Senses See What I'm Saying, author Laurence Rosenblum describes how difficult it is to become a master sommelier. Master sommeliers go through an exam that is sectioned off into three phases including: tasting, wine theory, and serving decorum. Due to the rigor of their exam there are only 167 masters in the world. I found it to be very interesting that brain scans have shown that as a sommelier sips, their brain shows enhanced activity in regions where someone would taste and smell as compared to a novice.
This video provides an overview of a sommelier course in New York City.