guest beer
US /ˈɡest bɪr/
UK /ˈɡest bɪr/

1.
piwo gościnne
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.
Piwo gościnne tego tygodnia to bogaty stout z lokalnego minibrowaru.
•
They always have an interesting selection of guest beers on tap.
Zawsze mają ciekawą selekcję piw gościnnych z kija.