Doctor Evil burned rubbish (6)
I believe the answer is:
drivel
'rubbish' is the definition.
(I've seen this before)
'doctor evil burned' is the wordplay.
I cannot really understand how this works, but
'doctor' could be 'dr' (abbreviation) and 'dr' is located in the answer.
an anagram of 'evil' is 'ivel' which is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for drivel that I've seen before include "Stupid talk" , "Foolishness" , "Claptrap" , "Nonsense, garbage" , "Slaver" .)