Is lager drunk – or port? (7)
I believe the answer is:
algiers
'port?' is the definition.
(I know that Algiers is a port)
'is lager drunk' is the wordplay.
'drunk' indicates anagramming the letters.
'is'+'lager'='islager'
'islager' is an anagram of 'ALGIERS'.
'or' acts as a link.
(Other definitions for algiers that I've seen before include "N. African port" , "North African port" , "NW African capital" , "Capital city" , "North African capital" .)