Drinks producer not moving in rough ride (9)
I believe the answer is:
distiller
'drinks producer' is the definition.
(I've seen this before)
'not moving in rough ride' is the wordplay.
'not moving' becomes 'still' ('still' is the opposite to 'moving').
'in' is an insertion indicator.
'rough' is an anagram indicator (a rough or broken ordering of the letters).
'ride' anagrammed gives 'dier'.
'still' put inside 'dier' is 'DISTILLER'.
(Other definitions for distiller that I've seen before include "Producer of spirit" , "Whisky manufacturer" , "Maker of alcoholic spirits" , "One providing strong drink" , "Spirits manufacturer" .)