Dairy product manufactured backwards (4)
I believe the answer is:
edam
'dairy product' is the definition.
(Edam is an example)
'manufactured backwards' is the wordplay.
'manufactured' becomes 'made' (I've seen this before).
'backwards' says the letters should be written in reverse.
'made' back-to-front is 'EDAM'.
(Other definitions for edam that I've seen before include "Kind of cheese" , "Sphere of Dutch cheese" , "Dairy product" , "milk product" , "Made into a nice cheese" .)