Eat green fresh produce (8)
I believe the answer is:
generate
'produce' is the definition.
(generating is a kind of producing)
'eat green fresh' is the wordplay.
'fresh' indicates an anagram.
'eat'+'green'='eatgreen'
'eatgreen' anagrammed gives 'GENERATE'.
(Other definitions for generate that I've seen before include "Create for teenager" , "Cause to arise; produce" , "Teenager (anag) - green tea (anag)" , "Give rise to" , "Make" .)