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:
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi