Top epicurean reviews nuts and cheese (4)
I believe the answer is:
edam
'cheese' is the definition.
(I know that Edam is a type of cheese)
'top epicurean reviews nuts' is the wordplay.
'top' indicates taking the first letters (in a down clue, the first letter is top).
'reviews' says the letters should be written in reverse (view the letters another way).
'nuts' becomes 'mad' (informal term).
The first letter of 'epicurean' is 'e'.
'mad' in reverse letter order is 'dam'.
'e'+'dam'='EDAM'
'and' is the link.
(Other definitions for edam that I've seen before include "milk product" , "town in Holland" , "Yellow cheese with a red covering" , "Round, yellow cheese" , "Dutch specialty" .)