Hope to have most of jelly with helping (10)
I believe the answer is:
aspiration
'hope' is the definition.
(I've seen this in another clue)
'most of jelly with helping' is the wordplay.
'most of' means to remove the last letter.
'jelly' becomes 'aspic' (aspic is a kind of jelly).
'with' is a charade indicator (letters next to each other).
'helping' becomes 'ration' (a ration is a serving or helping).
'aspic' with its final letter taken away is 'aspi'.
'aspi'+'ration'='ASPIRATION'
'to have' is the link.
(Other definitions for aspiration that I've seen before include "Drawing breath" , "Hope" , "goal" , "Dream" , "Eager desire" .)