Sparkler hastily shortened at each end (4)
I believe the answer is:
asti
'sparkler' is the definition.
(I've seen this before)
'hastily shortened at each end' is the wordplay.
'shortened at each end' indicates the answer is hidden within the clue (ignore some letters at both ends).
'ASTI' is hidden within 'hastily'.
(Other definitions for asti that I've seen before include "Piedmontese white wine" , "Italian town, famous for its wine" , "White wine named after a town in Piedmont" , "Italian white wine" , "Source of fizz" .)