List not about dairy product (7)
I believe the answer is:
stilton
'dairy product' is the definition.
(Stilton is an example)
'list not about' is the wordplay.
'about' is an anagram indicator.
'list'+'not'='listnot'
'listnot' with letters rearranged gives 'STILTON'.
(Other definitions for stilton that I've seen before include "rich food?" , "Type of cheese" , "Strong English cheese, originally from Leicestershire" , "Cheese variety" , "19 cheese" .)