German wine Sir Nigel ordered (8)
I believe the answer is:
riesling
'german wine' is the definition.
(I've seen this before)
'sir nigel ordered' is the wordplay.
'ordered' indicates an anagram.
'sir'+'nigel'='sirnigel'
'sirnigel' with letters rearranged gives 'RIESLING'.
(Other definitions for riesling that I've seen before include "Fragrant white wine from the Rhine valley or from California" , "Gin riles the wine" , "Strange wine for Sir Ingle" , "Aromatic white wine from the Rhine valley" , "Dry white wine (German)" .)