Strike in snack bar? (6)
I believe the answer is:
buffet
This clue is a double definition.
'strike' is the first definition.
(buffeting is a kind of striking)
'snack bar?' is the second definition.
('buffet' can be a synonym of 'snack bar')
'in' acts as a link.
(Other definitions for buffet that I've seen before include "Refreshment bar" , "beat" , "Self-service meal; strike" , "Box" , "Light refreshments - strike" .)