Chocolate powder (5)
I believe the answer is:
cocoa
'chocolate powder' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cocoa that I've seen before include "Chocolate ingredient" , "Bedtime drink made from powder" , "It's made from the seed of the cacao tree" , "Chocolatey drink" , "Evening drink taken in rococo amphitheatre" .)