Buffet voucher (starter not included) (3)
I believe the answer is:
hit
'buffet' is the definition.
(I've seen this in other clues)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for hit that I've seen before include "Chart topper" , "Knock" , "Popular song; strike" , "suit" , "Theatrical success,quite striking" .)