Supply party food for (5)
I believe the answer is:
cater
'supply party food for' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cater that I've seen before include "Provide for, supply" , "Provide for function" , "... you'll see minister" , "Provide service for like grocer" , "Supply provisions" .)