Stock set with food as image shows (5)
I believe the answer is:
aspic
'stock set with food' is the definition.
(jelly used to contain food)
'as image shows' is the wordplay.
I cannot quite understand how this works, but
'as' is present in the answer.
'image' could be 'pic' (short for picture) and 'pic' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
(Other definitions for aspic that I've seen before include "Clear savoury jelly" , "Preservative jelly" , "Savoury meat or fish jelly" , "Savoury jelly used to coat eggs etc" , "that's clear?" .)