A test devised for flavour (5)
I believe the answer is:
taste
'for flavour' is the definition.
(I've seen this before)
'a test devised' is the wordplay.
'devised' indicates anagramming the letters.
'a'+'test'='atest'
'atest' with letters rearranged gives 'TASTE'.
(Other definitions for taste that I've seen before include "Flavour or discrimination" , "Savour; discernment" , "choice" , "Savour in state" , "Refinement or flavour" .)