Flavouring developed for fans (7)
I believe the answer is:
saffron
'flavouring' is the definition.
(I know that saffron is a type of flavouring)
'developed for fans' is the wordplay.
'developed' indicates anagramming the letters.
'for'+'fans'='forfans'
'forfans' is an anagram of 'SAFFRON'.
(Other definitions for saffron that I've seen before include "Golden yellow" , "Fans for, say orange food flavour and colouring" , "Flavouring derived from a species of crocus" , "Valuable spice" , "The stigma" .)