Drink expert taken in by yarn (5,4)
I believe the answer is:
table wine
'drink' is the definition.
(table wine is a kind of drink)
'expert taken in by yarn' is the wordplay.
'expert' becomes 'able' (I've seen this before).
'taken in by' is an insertion indicator.
'yarn' becomes 'twine' (both can mean a cord).
'able' placed into 'twine' is 'TABLE WINE'.
(Other definitions for table wine that I've seen before include "Drink with meals" , "Drink with meal" , "Plonk" .)