After half an hour I send food round to feed (7)
I believe the answer is:
Here is my best explanation:
'feed' is the definition.
(I've seen this before)
'after half an hour i send food round' is the wordplay.
'after' is a charade indicator (letters next to each other).
'half an hour' becomes 'ur'.
'send food' becomes 'nosh' (I can't explain this - if you can you should give a lot more credence to this answer).
'round' means one lot of letters goes inside another.
'ur' put next to 'i' is 'uri'.
'uri' placed inside 'nosh' is 'NOURISH'.
'to' is the link.
(Other definitions for nourish that I've seen before include "Feed and foster", "Provide with food for growth", "Sustain", "Support", "Feed, nurture", "Provide with materials for life and growth", "[OPPOSITE OF] starve", "encourage growth", "Feed, sustain" and "Feed - encourage to develop".)