Spanish food tramp eats occasionally (5)
I believe the answer is:
tapas
'spanish food' is the definition.
(I've seen this before)
'tramp eats occasionally' is the wordplay.
'occasionally' indicates alternate letters (letters taken at regular intervals or occasions).
'tramp'+'eats'='trampeats'
The alternate letters of 'trampeats' are 'TAPAS'.
(Other definitions for tapas that I've seen before include "Savoury snacks" , "Spanish appetisers" , "The Spanish scoff" , "Spanish savouries" , "taste of Spain?" .)