Popeye's veggie (7)
I believe the answer is:
spinach
'popeye's veggie' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spinach that I've seen before include "food" , "Vegetable plant" , "Vegetable, source of iron" , "Dark green vegetable" , "leaves on plate?" .)