Insane accompaniment for cheese (8)
I believe the answer is:
crackers
'insane' is the definition.
(similar in meaning)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for crackers that I've seen before include "Thin biscuits for cheese" , "Not being sensible" , "Nutty - biscuits" , "Crazy (colloq.); biscuits" , "Crazy types" .)