Create unopened wine without tax breaks (8)
I believe the answer is:
innovate
'create' is the definition.
(thesaurus)
'unopened wine without tax breaks' is the wordplay.
'unopened' means to remove the first letter.
'without' becomes 'no' ().
'tax' becomes 'vat' (British sales tax).
'breaks' is an insertion indicator.
'wine' with its initial letter taken off is 'ine'.
'no'+'vat'='novat'
'ine' going around 'novat' is 'INNOVATE'.
(Other definitions for innovate that I've seen before include "Pioneer" , "Invent" , "Introduce novelties" , "Bring in new ideas" , "Produce something new" .)