guest beer

US /ˈɡest bɪr/
UK /ˈɡest bɪr/
"guest beer" picture
1.

Gastbier

a beer, typically an ale, brewed by a different brewery than the one operating the pub or bar, offered temporarily alongside the regular selection

:
This week's guest beer is a rich stout from a local microbrewery.
Das Gastbier dieser Woche ist ein kräftiges Stout von einer lokalen Mikrobrauerei.
They always have an interesting selection of guest beers on tap.
Sie haben immer eine interessante Auswahl an Gastbieren vom Fass.