Supply of food providing assistance (7)

I believe the answer is:

helping

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'assistance' is the definition.
(synonyms)

'supply of food' is the wordplay.
'supply' becomes 'help' (helping is a kind of supplying).
'of food' becomes 'ing' (I can't explain this - if you can you should give a lot more credence to this answer).
'help'+'ing'='HELPING'

'providing' acts as a link.

Can you help me to learn more?

(Other definitions for helping that I've seen before include "Food portion" , "Assisting" , "Serving" , "Portion; giving aid" , "Giving assistance" .)

I've seen this clue in The Telegraph.

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