Savoury hot snack's short of nothing (5)
I believe the answer is:
tasty
'savoury' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for tasty that I've seen before include "Toothsome" , "Savoury" , "Scrumptious" , "Appetising, having pleasant flavour" , "Mouth-watering" .)