Fancy booze knocked back with salt (9)
I believe the answer is:
elaborate
'fancy' is the definition.
(similar in meaning)
'booze knocked back with salt' is the wordplay.
'booze' becomes 'ale' (type of alcohol).
'knocked back' shows that the letters should be reversed in order.
'with' says to put letters next to each other.
'salt' becomes 'borate' (borate is a kind of salt).
'ale' reversed gives 'ela'.
'ela'+'borate'='ELABORATE'
(Other definitions for elaborate that I've seen before include "Fussy" , "Polish" , "Add details to clarify meaning" , "involved" , "Develop in more detail" .)