Disparage a new recipe in fruit (10)
I believe the answer is:
depreciate
'disparage' is the definition.
(depreciating is a kind of disparaging)
'a new recipe in fruit' is the wordplay.
'a new' indicates anagramming the letters.
'in' means one lot of letters goes inside another.
'fruit' becomes 'date' (date is a kind of fruit).
'recipe' is an anagram of 'epreci'.
'epreci' inserted within 'date' is 'DEPRECIATE'.
(Other definitions for depreciate that I've seen before include "Belittle; lose value" , "Gradually lose value" , "Lose value with time" .)