connoisseur
noun [ C ] uk/ˌkɒn.əˈsɜːr/ us/ˌkɑː.nəˈsɝː/
（艺术品、食品、饮料等的）鉴赏家，鉴定家，行家
a person who knows a lot about and enjoys one of the arts, or food, drink, etc. and can judge quality and skill in that subject
a wine/art connoisseur 葡萄酒／艺术鉴赏家
a connoisseur of ballet/cigars 芭蕾舞／雪茄行家