Mixed roast Des ruined (8)
I believe the answer is:
assorted
'mixed' is the definition.
(I know that mixed can be written as assorted)
'roast des ruined' is the wordplay.
'ruined' indicates anagramming the letters.
'roast'+'des'='roastdes'
'roastdes' with letters rearranged gives 'ASSORTED'.
(Other definitions for assorted that I've seen before include "Of various types put together" , "Miscellaneous, sundry" , "Divers" , "Rod's seat (anag)" , "Containing various different kinds" .)