Fork prong gathers up passion fruit (9)
I believe the answer is:
tangerine
'fruit' is the definition.
(tangerine is a kind of fruit)
'fork prong gathers up passion' is the wordplay.
'fork prong' becomes 'tine' (I've seen this in another clue).
'gathers' is an insertion indicator.
'up passion' becomes 'anger' (I've seen this in another clue. I am not sure about the 'up' bit.).
'tine' enclosing 'anger' is 'TANGERINE'.
Can you help me to learn more?
(Other definitions for tangerine that I've seen before include "Variety of mandarin orange" , "something juicy being given to press" , "Taste" , "fruit product" , "Small citrus fruit with a loose skin" .)