One pulls out the stops roasting nuts (8)
I believe the answer is:
organist
'one pulls out the stops' is the definition.
I can't judge whether this definition defines the answer.
'roasting nuts' is the wordplay.
'nuts' indicates an anagram (nuts can mean crazy).
'roasting' anagrammed gives 'ORGANIST'.
Can you help me to learn more?
(Other definitions for organist that I've seen before include "One plays in church usually" , "Roasting (anag)" , "Church instr. player" , "Cathedral musician" , "It groans for church musician" .)