Drink gets me in with drunken Delia (7)
I believe the answer is:
limeade
'drunken delia' is the definition.
The definition suggests a singular noun which matches the answer.
'drink gets me in' is the wordplay.
'drink' becomes 'mead' (mead is a kind of drink).
'gets me' becomes 'lie' (I am not sure about this - if you are sure you should believe this answer much more).
'in' is an insertion indicator.
'mead' put inside 'lie' is 'LIMEADE'.
'with' is the link.
Can you help me to learn more?
(Other definitions for limeade that I've seen before include "soft drink" , "Fizzy drink" , "Winter festival" , "Non-alcoholic beverage" , "Fruity drink" .)