An iron drive I smashed producing 'plonk' (3,9)
I believe the answer is:
vin ordinaire
'plonk' is the definition.
(I've seen this before)
'an iron drive i smashed' is the wordplay.
'smashed' indicates an anagram.
'an'+'iron'+'drive'+'i'='anirondrivei'
'anirondrivei' anagrammed gives 'VIN ORDINAIRE'.
'producing' acts as a link.
(Other definitions for vin ordinaire that I've seen before include "Cheap table wine" , "Plonk" , "this isn't the best drink" .)