Found herbalists’ missing recipe, fancy! (9)
I believe the answer is:
establish
'found' is the definition.
(found can mean to set up or establish)
'herbalists' missing recipe fancy' is the wordplay.
'missing' indicates named letters should be taken away.
'recipe' becomes 'r' (abbreviation in medical prescriptions).
'fancy' indicates anagramming the letters.
'herbalists' with 'r' removed is 'hebalists'.
'hebalists' with letters rearranged gives 'ESTABLISH'.
(Other definitions for establish that I've seen before include "Found or authenticate" , "Set up or settle firmly in place" , "Found - his stable (anag)" , "Found - this sable (anag)" , "Set up or found" .)