guest beer
noun [ C ] UK uk/ˈɡest ˌbɪər/ us/ˈɡest ˌbɪr/
贵宾啤酒（由不同于普通啤酒供应商供应的，通常只在一段时间内销售的特制啤酒）
a type of beer that is made by a different company from the one that normally supplies the beer in a bar, and is sold in the bar for a short time