Bishop, say, wanting whisky and something sweet (12)
I believe the answer is:
butterscotch
'sweet' is the definition.
(butterscotch is a kind of sweet)
'bishop say wanting whisky' is the wordplay.
'bishop' becomes 'B' (chess abbreviation).
'say' becomes 'utter' (to utter something is to speak or say it).
'wanting' is a charade indicator (letters next to each other).
'whisky' becomes 'scotch' (Scotch is an example).
'b'+'utter'+'scotch'='BUTTERSCOTCH'
'and something' is the link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for butterscotch that I've seen before include "Brittle, yellow-brown sweet" , "confectionery" , "Kind of toffee" , "Hard brittle toffee" , "Type of toffee" .)