Vermouth? You can drink it with gin (7)
I believe the answer is:
italian
'vermouth?' is the definition.
(Italian vermouth is an example)
'you can drink it with gin' is the wordplay.
I cannot really understand how this works, but
'drink' could be 'it' and 'it' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for italian that I've seen before include "'From Milan or Venice, say (7)'" , "Eg, Native of Turin" , "European tongue" , "This European is anti Lia, oddly" , "of Verona?" .)