Stir sailor's food (8)
I believe the answer is:
flapjack
'food' is the definition.
(flapjack is a kind of food)
'stir sailor's' is the wordplay.
'stir' becomes 'flap' (I've seen this in another clue).
'sailor' becomes 'jack' (jack can informally mean a sailor).
'flap'+'jack'='FLAPJACK'
(Other definitions for flapjack that I've seen before include "Biscuit of rolled oats and syrup" , "American pancake" , "Thick oat biscuit" , "Oaty biscuit; US pancake" , "Biscuit made with oats, syrup and butter" .)