Raw nut in a red concoction (9)
I believe the answer is:
untrained
'raw' is the definition.
(I've seen this in another clue)
'nut in a red concoction' is the wordplay.
'concoction' indicates anagramming the letters.
'nut'+'in'+'a'+'red'='nutinared'
'nutinared' anagrammed gives 'UNTRAINED'.
(Other definitions for untrained that I've seen before include "Inexpert" , "Green" , "lay" , "not qualified?" , "Not taught" .)