See under wine tasting.
Especially in the professional tasting and description of wines, many factors play a role. These include not only appropriate training and experience, but also rules and framework conditions (environment) defined for this purpose in order to be able to make an assessment that is as objective as possible. See on the complex of topics under the keywords:
In the past, you needed a wealth of encyclopaedias and specialist literature to keep up to date in your vinophile professional life. Today, Wine lexicon from wein.plus is one of my best helpers and can rightly be called the "bible of wine knowledge".
Prof. Dr. Walter Kutscher
Lehrgangsleiter Sommelierausbildung WIFI-Wien