Biscuit needs drink — get urn working! (6,3)
I believe the answer is:
ginger nut
'biscuit' is the definition.
(I've seen this before)
'drink get urn working' is the wordplay.
'drink' becomes 'gin' (gin is a kind of drink).
'working' is an anagram indicator.
'get'+'urn'='geturn'
'geturn' with letters rearranged gives 'gernut'.
'gin'+'gernut'='GINGER NUT'
'needs' acts as a link.
(Other definitions for ginger nut that I've seen before include "Spicy biscuit" , "Type of biscuit" , "Kind of biscuit" , "Variety of biscuit" , "redhead?" .)