Dash of panache (4)
I believe the answer is:
elan
'dash of panache' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elan that I've seen before include "Flair and dash" , "Vivacity, dash" , "French vivacity" , "Energetic style - anagram of 3" , "Dashing style" .)