Looker demands food (4)
I believe the answer is:
dish
I believe this clue is a double definition.
'looker' is the first definition.
(I've seen this in another clue)
'food' is the second definition.
(I know that dish is a sushi)
'demands' acts as a link.
(Other definitions for dish that I've seen before include "Vessel for food" , "(Food for) serving plate" , "Kitchen container" , "stunner?" , "Sky can be seen through this" .)